The material with a mass of 45 grams occupies a space of 1 cubic centimeter, the measurement given is density.
What is density?
Any unit that is defined as mass divided by volume is a mass density according to the density equation ( = m/V). There are numerous units for mass density in use due to the great number of units of mass and volume used to represent a wide range of magnitudes.
The two units for density that are perhaps most frequently used are the SI unit of kilogram per cubic metre (kg/m3) and the cgs unit of gram per cubic centimeter (g/cm3). There are 1000 kg/m3 in one g/cm3.
To learn more about density click the given link
https://brainly.com/question/1354972
#SPJ4
One student made the incomplete diagram shown below to represent the relationship between sediment, igneous rocks, and metamorphic rocks:
three ovals, labeled from left to right, metamorphic rock, sediment, and igneous rocks respectively.
Which of these is the correct next step to complete the diagram?
Put an arrow labeled heat and melt, pointing from igneous rocks to sediment.
Put an arrow labeled deposition and lithification, pointing from metamorphic rock to sediment.
------------------------------------------------------------------
Put an arrow labeled cools and crystallizes, pointing from igneous rocks to sediments.
Put an arrow labeled heat and pressure, pointing from sediment to metamorphic rock.
Put an arrow labeled heat and pressure, pointing from sediment to metamorphic rock.
What is a rock?A rock is a solid mass that could occur either on the earth surface or in the earth's crust. There are several kinds of rocks that exist. There are the igneous rocks, the sedimentary rocks and the metamorphic rocks.
The igneous rock is the first formed rock. The sedimentary rock is formed from the remains of organisms that pile up overtime. Metamorphic rocks are formed when rocks change overtime.
The correct label that completes the diagram is;
Put an arrow labeled heat and pressure, pointing from sediment to metamorphic rock.
Learn more about rocks:https://brainly.com/question/19930528
#SPJ1
What is the total concentration of phosphate ions (in M) in a 2. 1 M aqueous solution of magnesium phosphate?
The total concentration of phosphate ions in an aqueous solution of magnesium phosphate is 4.2 M.
The balanced chemical equation for the reaction of dissociation of magnesium phosphate in water:
Mg₃(PO₄)₂(aq) → 3Mg²⁺ (aq) + 2PO₄³⁻ (aq)
From the balanced chemical equation of dissociation of magnesium phosphate: n(Mg₃(PO₄)₂) : n(PO₄³⁻) = 1 : 2
There are two phosphate ions in one molecule of magnesium phosphate.
c(Mg₃(PO₄)₂) = 2.1 M; the concentration of magnesium phosphate
c(PO₄³⁻) = c(Mg₃(PO₄)₂) × 2
c(PO₄³⁻) = 2.1 M × 2
c(PO₄³⁻) = 4.2 M; the total concentration of phosphate ions in an aqueous solution of magnesium phosphate
More about concentration: brainly.com/question/4789731
#SPJ4
ASAP!!!!!!!! test!! will give brainlist!!
Answer:
the answer to your question is D. 4.5 seconds hope this helps.
Explanation:
acids are substances that produce hydrogen ions (h ) when dissolved in water. lemon juice is an example of an acid.
The lemon juice taste like a juice sour and citrus .It is an acid and react with metal to form salt and produce hydrogen gas.
What are metals?A metals are defined as those element which has characteristic chemical and physical properties.
Lemon juice react with metal to form salt and produce hydrogen gas.
2H+ (l) + M (s) -> M2+(s) + H2(l)
Acid is a molecule or ion capable of donating a protons.
Base is a molecule or ion capable of accepting a protons.
Thus, the lemon juice taste like a juice sour and citrus .It is an acid and react with metal to form salt and produce hydrogen gas.
To learn more about metals, refer to the link below:
https://brainly.com/question/18153051
#SPJ4
Your question is incomplete, but probability your full question was
Acids are substances that produce hydrogen ions (h ) when dissolved in water. lemon juice is an example of an acid.
What does the lemon juice taste like and how it react with some metals?
you are runnig a reaction to make a carboxylic acid, but what appears to be the product spot is too low on the tlc plate and is elongated, i.e., it isn't a nice circle but is stretched out a lot. to make this spot rounder and move a little farther, which of the following is most likely to
To make the spot more rounder, add a trace of acetic or formic acid to the eluting solvent mixture.
Thin layer chromatography:Thin layer chromatography (TLC) is a chromatographic method that uses a thin stationary phase supported by an inert backing to separate the components of a mixture. It can be carried out on an analytical scale to track the development of a reaction or on a preparative scale to purify minute quantities of a chemical.
Like all chromatography, TLC works on the principle that a chemical will have varying affinities for the mobile and stationary phases, influencing how quickly it migrates. TLC aims to produce well-defined, well-separated spots.
Streaks rather than spots are frequently produced in neutral solvents by acids, bases, and highly polar substances. Streaks can obscure other areas and make it challenging to compute a [tex]R_{f}[/tex].
Acid streaking can be corrected by adding a few percent of acetic or formic acid to the solvent. Similarly for bases, adding a little amount of triethylamine can enhance results. Adding a little amount of methanol can enhance polar substances' results.
Read more about Thin layer chromatography(TLC): https://brainly.com/question/24370980
#SPJ4
What is the molarity of lioh after 274 ml of 5.00 m lioh are diluted with an additional (not total) 484 ml of water?
The molarity of LiOH is 1.81 M.
c₁(LiOH) = 5.00 M; original concentration of the solution of LiOH, before it gets diluted
V₁(LiOH) = 274 mL; volume to be diluted
V₂(LiOH) = 274 mL + 484 mL
V₂(LiOH) = 758 mL; the final volume after dilution
c₂(LiOH) = ?; final concentration of the solution, after dilution
c₁ · V₁ = c₂ · V₂; formula for calculation the molarity of a diluted solution
c₂(LiOH) = c₁ · V₁ ÷ V₂
c₂(LiOH) = 5.00 M · 274 mL ÷ 758 mL.
c₂(LiOH) = 1.81 M; molarity of LiOH
More about diluted solution: brainly.com/question/24881505
#SPJ4
Choose the hypothesis for the controlled experiment that answers the question: “How does temperature affect the color of leaves on a tree?”
Cooler temperatures cause leaves to change color faster.
Deciduous leaves change color, while coniferous leaves don’t.
Warmer temperatures in the fall makes leaves produce chlorophyll.
Leaves are green because of the compound chlorophyll.
The correct hypothesis is that: Cooler temperatures cause leaves to change color faster; option A
What is a hypothesis?A hypothesis is a statement put forward to explain an observation without having done prior experiments to confirm or disprove the statement.
A controlled experiment is an experiment in which no changes are introduced by the researcher on the variables of the experiment.
Considering a controlled experiment that answers the question: “How does temperature affect the color of leaves on a tree?”
The hypothesis will be that either temperature affects the color of leaves on the tree or that temperature has no effect on the color of the leaves on the tree.
In conclusion, a hypothesis tries to explain an observation.
Learn more about hypothesis at: https://brainly.com/question/606806
#SPJ1
Which of the compounds, c5h12 , bai2, zn(no3)2, ocl2, are expected to exist as molecules?
Pentane ( C5H12) and Oxygen Dichloride (OCl2) would be the expected answer.
Because Pentane ( C5H12) and Oxygen Dichloride (OCl2) both are forming covalent bonds that is they are covalently connected together and they tends to contribute and share electrons in order to gain the stability.
On the other hand Barium Iodide (BaI2 ) and Zinc Nitrate Zn(NO3)2 both are forming ionic bonds that is the bond formation is due to two way electrostatic attraction. And the ionic compounds are not expected to exist as a compound.
Hence the compounds that are expected to exist as a molecule would be Pentane (C5H12) and Oxygen Dichloride (OCl2).
To know more about Covalent and ionic bond here :
https://brainly.com/question/10777799?referrer=searchResults
#SPJ4
both include steps involving reactions that result in the release of carbon dioxide. both include steps involving the hydrolysis of organic molecules. both sets of reactions occur within the mitochondria. both include steps involving the oxidation of organic molecules.
The common feature of both sets of reaction is represented as that both include steps involving the hydrolysis of organic molecules.
Which phases of cellular respiration release carbon dioxide (CO2)?The carbon skeleton of glucose has been broken down to CO2 with some net gain in ATP after glycolysis and the citric acid cycle, but before the electron transport chain and oxidative phosphorylation.
Where does the carbon dioxide come from?Answer and justification the citric acid cycle is the phase of cellular respiration where carbon dioxide is released. The Krebs cycle, oxidative phosphorylation, and glycolysis are the three phases of aerobic cellular respiration.
To know more about ATP production within the cell, visit:
https://brainly.com/question/9425355
#SPJ4
A busen burner flame is sooty black and mixed with an organige- yellow color. which is the probable reason for this condition?
Answer:
the most probable cause is an improper ratio of oxygen for combustion. :)
If you were making a dilution of a culture and placed 1 ml of the original stock culture into a 99-ml water blank, the resulting dilution factor would be?
If you were making a dilution of a culture and placed 1 ml of the original stock culture into a 99 ml water blank, the resulting dilution factor would be 1/100
Calculation ,
volume of stock transferred ( Vi ) = 1 ml
Diluent volume = 99 ml
The dilution factor (DF) : ratio of concentration of stock solution and diluted solution or ratio of the volume of final solution to the initial volume from stock solution
From equation of dilution :
M₁V₁=M₂V₂
Dilution factor = volume of stock transferred ( Vi ) / Final volume ( Vf )
The Final volume ( Vf ) = Diluent volume + stock volume
After putting the value of all given term in above equation we get the value of dilution factor .
Dilution factor = 1 ml / 1+ 99 = 1 / 100
To learn about dilution factor please click here ,
https://brainly.com/question/20113402
#SPJ4
when using the liquid-based method for the collection of a specimen for a pap test, which of the following is used?
When using the liquid-based method for the collection of a specimen for a pap test, cells are suspended in a bottle of preservative by rinsing the broom in the specimen vial.
What is a pap test?
A Pap test, commonly known as a Pap smear, is a procedure a doctor uses to check for cervical cancer in female patients. Additionally, it may show alterations in your cervical cells that could later develop into cancer.
To detect alterations in cervical cells before they progress to malignancy, a pap smear is performed. The best chance of beating cancer is to discover it as soon as possible. If you don't, early detection of cell alterations can aid in preventing cancer.
Thus, by washing the broom in the specimen vial during the liquid-based method of collecting a specimen for a Pap test, cells are suspended in a bottle of preservative. Cells are immediately deposited on a microscope slide while using the direct smear method to obtain specimens for a Pap test.
To learn more about pap test from the given link below,
https://brainly.com/question/1170220
#SPJ4
Write the balanced formula and net ionic equation for the reaction that occurs when the contents of the two beakers are added together . what colors represent the spectator in each reaction?
[tex]AgNo_{3} (aq)+LiCl(aq)--- > AgCl(s)+LiNO_{3}(aq)[/tex]
Adenosine triphosphate (TP-ATP) ATP is the substance needed for cells to function. b. It is a molecule of energy. It supplies energy for all biological (cellular) processes. Without ATP, tissues, organs, and eventually, the entire organism perish. c. To create ATP, glucose is broken down by several complex chemical reactions (usually). Larger Organic Compounds Being Produced 1. Reactions in Synthesis or Dehydration (dehydration synthesis) When synthesizing substantial organic compounds (discussed later). A dehydration reaction takes place and is known as such.
Net Ionic chemicals do not all dissolve in water.
What mix of ions will dissolve is determined by a list of solubility rules.
In a precipitation reaction, soluble reactants are transformed into one or more insoluble product(s). The precipitate is the term for the material. Example: When LiCl and AgNO3, both of which are soluble, are combined, the result is AgCl, which is insoluble.
[tex]AgNO_{3} (aq) + LiCl(aq) -- > AgCl(s) + LiNO_{3} (aq)[/tex]
learn more about net ionic equation:
https://brainly.com/question/2947744
#SPJ4
Which is not a desirable aspect of titanium as a material:______
a. good corrosion resistance in salt water
b. high specific strength
c. easy manufacturing in open air environments
d. high yield strength
The correct answer is option C. Easy manufacturing in open air environments is not the desirable aspect of titanium.
What is Titanium?
Although titanium is generally known for its low weight, strength, and great corrosion resistance, it is less well known for its other qualities and its true capabilities. After extensive experimentation following its discovery in 1790, the 'new' metal titanium began to be produced industrially in 1948.
The inorganic compound with the chemical formula TiO 2 is titanium dioxide, sometimes referred to as titanium(IV) oxide or titania. Its names as a pigment include Pigment White 6, Titanium White, and CI 77891.
To learn more about Titanium click the given link
https://brainly.com/question/10816130
#SPJ4
To determine the standard heat of formation for carbonic acid, h2co3, the proper chemical equation is:_________
The standard heat of formation for carbonic acid, H₂CO₃, the right chemical equation is H₂CO₃ → H₂O + CO₂ (and also H+ and CO₃— but this is irrelevant here).
Carbonic acid reaction :An important example of a reversible reaction in the human body.
This reaction occurs when CO₂ (CO₂) and water (H₂O) combine to form carbonic acid (H₂CO₃).
The newly formed acid is unstable, and it dissociates to yield both proton (H+) and bicarbonate ion (HCO₃-). The equation for the entire carbonic acid reaction is: H₂CO₃ → H₂O + CO₂
Carbonic acid (H₂CO₃) forms in small amounts when CO₂ dissolves in H₂O, yet decomposes rapidly under ambient conditions of temperature and pressure. Despite its fleeting existence, H₂CO₃ plays a crucial role in the global carbon cycle and in biological carbonate-containing systems. The short lifetime in water and presumed low concentration under all terrestrial conditions has stifled study of this fundamental species.
Learn more about carbonic acid formation :
brainly.com/question/27945587
#SPJ4
Explain how the compression factor varies with pressure and temperature and describe how it reveals information about the intermolecular interactions in real gases.
The compressibility factor is always greater than unity above the Boyle temperature and rises gradually but steadily with pressure.
What is Boyle temperature?A real gas begins to act like an ideal gas at a certain pressure range at a temperature, which is known as the boyle temperature. A Boyle temperature is the point at which the second coefficient of an equation reaches zero.
The temperature at which a real gas begins to behave like an ideal gas across a specific range of pressure is known as Boyle's temperature or the Boyle point. Compressibility factor Z and pressure P are represented on a graph.
To learn more about Boyle temperature from the given link:
brainly.com/question/13362447
#SPJ4
Write a function swap that swaps the first and last elements of a list argument.
Swap function swaps the first and last elements of a list argument. By saving the first and last element as a pair in the tuple variable get, you can unpack those elements with the first and last member in that list. The First and Last values in that list have been switched around.
What is swapping of elements?
The elements will be switched, and the new list will print. This application employs the same reasoning as two-number swapping in Python or any other language by swap function. Assign the first element value to the final element, create a temporary variable to keep the last value, and then assign the temporary element value to the first element. Unpack those elements with the first and final element in that list by storing the first and last element as a pair in the tuple variable get. In that list, the First and Last values are now reversed.
To learn more about swapping of elements from the given link below,
https://brainly.com/question/24317467
#SPJ4
when using the liquid-based method for the collection of a specimen for a pap test, which of the following is used?
When using the liquid-based method for the collection of a specimen for a pap test, plastic fronded broom is used
What is checked in a Pap test?The Pap test (or Pap smear) looks for pre cancers, cell changes on the cervix which may become cervical cancer if they are not treated appropriately. The HPV test looks for the virus (human papillomavirus) which will cause these cell changes.
What happens if a Pap test is positive?If the results of your Pap test come back positive, meaning your doctor found abnormal or unusual cells on your cervix. It doesn't suggest you have cervical cancer. most frequently , the abnormal test result means there are cell changes caused by the human papilloma virus (HPV).
Learn more about pap test:
brainly.com/question/1380012
#SPJ4
What is the major organic product obtained from the following reaction? os04 nahso4
What is the major organic product obtained from the following reaction? os04 nahso4
OH OH are the two major organic product obtained from the following reaction.
What is organic product?
Produce can be referred to as organic if it was grown on soil without any prohibited substances applied for three years prior to harvest, according to certification. Organic foods include fresh vegetables, meats, and dairy products as well as processed goods like crackers, beverages, and frozen dinners.
Therefore,
OH OH are the two major organic product obtained from the following reaction.
To learn more about organic product from the given link:
https://brainly.com/question/21118887
#SPJ4
energy is released during which phase changes? check all that apply.boilingcondensingdepositingfreezingmeltingsubliming
Energy is released during these phase changes : Freezing, Depositing and Condensing.
During phase change, the matter changes from one state to another and the energy goes exclusively to changing the phase of any substance.
During condensation, freezing, and deposition, phase changes and water releases energy so that the energy released helps the molecules of water in changing the bonding pattern of matter. this allows to transform them to a lower state of energy.
These reactions or processes are exothermic in nature.
Condensation is a process in which a gas is condensed into a liquid. During this, the quantity of energy which gets converted into heat energy from chemical energy, known as heat of condensation.
Freezing releases energy as when liquid turns into solid or water turns into ice, the water molecules moves towards each other.
Depositing is an exothermic process a it releases energy. Heat is eliminated from gas at specific point of pressure, where kinetic energy is not enough in the gas molecules to prevail over intermolecular forces.
To learn more about the phase changes,
brainly.com/question/18076430
#SPJ4
How many electrons are transferred from glyceraldeyde 3 phosphate to nad in glycolysis?
Electrons transferred from Glyceraldehyde 3 phosphate to NAD in glycolysis per glucose are 4.
What are electrons?The electron is a subatomic particle (denoted by symbol e−or β−) whose electric charge is negative one elementary charge. Electrons belong to first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure. The electron's mass is approximately 1836 times smaller than that of proton.
Quantum mechanical properties of electron include an intrinsic angular momentum (spin) of a half-integer value, expressed in units of the reduced Planck constant, ħ. Being fermions, no two electrons can occupy same quantum state, in accordance with the Pauli exclusion principle. Like all elementary particles, electrons exhibit properties of both the particles and waves: They can collide with the other particles and can be diffracted like light. The wave properties of electrons are easier to observe with the experiments than those of other particles like neutrons and protons because electrons have a lower mass and hence a longer de Broglie wavelength for given energy.
Electrons play an essential role in numerous physical phenomena, such as electricity, magnetism, chemistry and thermal conductivity, and they also participate in the gravitational, electromagnetic and weak interactions. Since an electron has charge, it has a surrounding the electric field, and if that electron is moving relative to an observer, said observer will observe it to generate a magnetic field. Electromagnetic fields produced from other sources will affect the motion of an electron according to Lorentz force law.
Electrons radiate or absorb energy in form of photons when they are accelerated. Laboratory instruments are capable of trapping individual electrons as well as electron plasma by use of electromagnetic fields. Special telescopes can detect the electron plasma in outer space. Electrons are involved in many applications such as the tribology or frictional charging, electrolysis, electrochemistry, battery technologies, electronics, welding, cathode-ray tubes, photoelectricity, photovoltaic solar panels, electron microscopes, radiation therapy, lasers, gaseous ionization detectors and particle accelerators.
To know more about electrons visit: brainly.com/question/1255220
#SPJ4
why does venus have the largest gravitational attraction of the inner planets?
Venus is the second planet from the Sun and is named after the Roman goddess of love and beauty.
Why does Venus have the largest gravitational attraction of the inner planets?Venus has much lower mass as compared to other planets. The distance between the Earth and Venus is much shorter as compared to the distance between Earth and Jupiter. Similarly, the gravitational force of each of these planets on objects on the surface of Earth is largest for Jupiter.
The radius of Venus is 4.6023×108 km2, the mass of Venus is 4.8675×1024 kg, and has a density of 5.243 g/cm3 so that's why Venus is equivalent in size, mass and density of the Earth. So that's why the gravity on Venus is very close to that of Earth.
So we can conclude that Venus is the second planet from the Sun and is named after the Roman goddess of love and beauty.
Learn more about Gravitational Attraction here: https://brainly.com/question/15090289
#SPJ1
what is the molarity of a solution prepared by diluting 40.0 ml of 0.0706 m ammonium sulfate to 500.00 ml
The molarity of a solution prepared by diluting 40.0 ml of 0.0706 m ammonium sulfate to 500.00 ml is
Molarity of solution = M₁
Molarity of Ammonium sulfate (M₂) = 0.0706 m
Volume of Solution (V₁) = 40.0 ml
Volume of ammonium sulfate (V₂) = 500.00 ml
According to Dilution formula - M₁V₁=M₂V₂
M₁ = M₂V₂/V₁
M₁ = 0.0706 m × 500 × 10⁻³ L/ 40× 10⁻³ L
M₁ = 0.8825 m
Molarity is defined as number of moles of solute in 1 litre of solution. It is used to measure concentration of a solution. It is also called amount concentration, molar concentration or substance concentration.
Concentration of solution can also be measured using molality, normality etc.
Units: Moles/ litre
To learn more about molarity here
https://brainly.com/question/14809207
#SPJ4
What is the name of the compound N2Cl4?
How did you determine the bond type?
What were the steps you used to determine the naming convention for the compound?
The name of the given compound N₂Cl₄ is Dinitrogen Tetrachloride. The compound N₂Cl₄ comprises non-metals (nitrogen and chlorine), therefore bond type between them is covalent bond. The steps used to name the compound is nomenclature used for covalent bonding.
Type of bond can be determined by -
An atom follows octet rule, which means they have 8 electrons in its valence shell. It occurs by sharing or transferring of electrons. A covalent bond is formed when the electrons are shared, and an ionic bond is formed when the electrons are transferred.The given compound has molecular formula N₂Cl₄. Both nitrogen and chlorine are the non-metallic compounds and they are electronegative. This means they gain electrons. Nitrogen and chlorine will complete its octet by sharing the electrons which means they form a covalent bond.Steps used to determine naming convention for the compound are -
In the given compound, two central nitrogen atoms are bonded by the covalent bond by sharing the valence electrons. Two chlorine atoms are connected to each the nitrogen atom by forming the covalent bond. A molecule of the given compound has two nitrogen atoms and four chlorine atoms.Identifying the name of compound -Two atoms of nitrogen = Dinitrogen (di represents two)
Four atoms of chlorine = Tetrachlorine (tetra represents four)
Therefore, N₂Cl₄ is Dinitrogen tetrachloride
To learn more about N₂Cl₄,
brainly.com/question/17041828
#SPJ1
Which compound will elute last from a silica filled column: 4-hydroxynitrobenzene or 2-hydroxynitrobenzene? why
4-hydroxynitrobenzene will elute last from the silica filled column.
A scientific method for dissolving a mixture into its constituent parts is chromatography.the chromatographic procedure of removing an adsorbate from a solid adsorbing media called elute using a solvent. separating an antibody from the antigen it is bound to.In reverse phase liquid chromatography, stationary phase is non-polar in nature and becomes more non-polar as the number of carbon chains grows.The order of elution from a column usually follows the series: alkyl halides < saturated hydrocarbons < unsaturated hydrocarbons < ethers < esters < ketones < amines < alcohols < phenols < acidsare typically eluted from columns in the following order. Salts and polymeric substances frequently do not elute. Solvents: For adsorbent sites, the solvent will compete with the sample.The more polar the solute, the more readily it will dissolve in the stationary phase, remain in the column, and finally elute last. Therefore, in normal phase chromatography, the non-polar component will elute earlier than the polar component between the polar and non-polar components.4-hydroxynitrobenzene is more polar than 2-hydroxynitrobenzene therefore it will elute last.
Learn more about chromatography here:
https://brainly.com/question/11960023
#SPJ4
christopher shaw et al., "aluminum vaccine adjuvants: are they safe?," current medicinal chemistry 18,
The most used vaccination adjuvant is aluminum, which has been shown to be a neurotoxic in experimental settings. But it is abundantly obvious from experimental research that aluminum adjuvants have the potential to cause significant immune problems in people.
What is Aluminum vaccine adjuvants?
Aluminum adjuvants have been used extensively for almost 90 years, yet medical research still has a very limited grasp of how they work. Concerning gaps in knowledge exist on the toxicity and pharmacokinetics of certain substances. Despite this, there seems to be widespread acceptance of the idea that aluminum in vaccinations is safe.
Adjuvant-form aluminum carries a risk for autoimmune, long-term brain inflammation, and associated neurological disorders and may therefore have substantial and widespread negative health effects. According to our assessment, the likelihood that vaccine benefits may have been exaggerated and the risk of potential adverse effects underappreciated has not undergone a thorough evaluation in the medical and scientific community.
To learn more about Aluminum vaccine adjuvants click the given link
https://brainly.com/question/9431446
#SPJ4
what is the hydronium ion (h3o ) concentration in milk if it has a ph of 8.2? a. 2.75 × 10–4 b. 6.31 × 10–9 c. 3.64 × 103 d. 1.58 × 108
The correct answer is option B.
6.31 × 10–9 mole/dm³
What is hydronium ion?
The aqueous cation H3O+, a particular kind of oxonium ion created by protonation of water, is known by the common term hydronium. It is frequently thought of as the positive ion that results from the proton transfer of Arrhenius acid molecules in solution to the surrounding water molecules.
The concentration of the hydronium ion is equal to that of the H+ ion and is equivalent to H3O+. You can find the H+ ion concentration by:
pH = -log[H⁺]
Given;
pH = 8.2
[H⁺] = 10^(-8.2)
[H⁺] = 6.31 x 10⁻⁹ mole/dm³
To learn more about hydronium ion click the given link
https://brainly.com/question/27586088
#SPJ4
What happens to the electrical potential of te refernece electrode as ph changes?
The redox potential rises as the pH drops. The redox potential also drops when the pH rises and the hydrogen ion concentration falls.
Waht is reference electrode?
A reference electrode is an electrode with a consistent and recognized electrode potential. Employing a redox system with constant concentrations of each redox reaction participant typically results in the electrode potential being highly stable. Reference electrodes can be utilized in a variety of applications.
The term "reference electrode" refers to an electrode whose potential is either arbitrarily assumed to be zero or is precisely understood. Examples of reference electrodes include the Standard Hydrogen Electrode (SHE), the calomel electrode, the silver-silver chloride electrode, and the glass electrode.
To learn more about reference electrode click the given link
https://brainly.com/question/28302450
#SPJ4
Calculate the nuclear binding energy per nucleon for tl205 which has a nuclear mass of 204.974 amu .
The nuclear binding energy per nucleon for tl205 which has a nuclear mass of 204.974 AMU is 7.68emv.
How do you compute binding energy per nucleon in MeV?If we have a nucleus with Z is for protons and N is for neutrons and mass as MA, where
A = Z+N
then its binding energy in MeV is provided by:
Eb (MeV) = ( Zmp + Nmn -MA) x 931.494 MeV/u
Operating in terms of the actual binding energy, we estimate as follows.
We get 7.68 emv.
Nuclear binding energy is described as the lowest amount of energy required to dismantle or break down an atom's nucleus into the subatomic particles that make it up (which are protons and neutrons).
To learn more about Nuclear binding energy visit the link
https://brainly.com/question/14287889
#SPJ4
what quantity in moles of phosphorus atoms do you have if you have 4.60 × 10²² atoms of phosphorus. (the mass of one mole of phosphorus is 30.97 g.)
4.60 * 10^22 atoms P = 4.60 * 10^22/6.023 * 10^23 mole of P
which is equal to 0.0763 mole P
What are moles?
A mole is defined as the volume of substance that has the same number of discrete entities as a 12 g sample of pure 12C (atoms, molecules, ions, etc.). The Latin meaning of the term "mole" is "large mass" or "bulk," which is appropriate given that it is used as the name for this unit.
Now for the given question,
6.023 * 10^23 atoms Phosphorus = 1 mole of P
Thus, 4.60 * 10^22 atoms P = 4.60 * 10^22/6.023 * 10^23 mole of P
which is equal to 0.0763 mole P.
To learn more about shape of the molecule from the given link below,
https://brainly.com/question/921246
#SPJ4