The monoatomic ion of potassium is K+ and Oxygen is O2-
The term "monatomic ion" refers to an ion with only one atom. A polyatomic ion is one that has more than one atom, even if they are all from the same element.The monatomic ions generated by potassium (K) and Oxygen (O) are being askedwe will first look for the group number that an element belongs to in order to establish the charge of that element. For non-metals, the charge of the ion is calculated by deducting 8 from the group number For metals, the charge of the ion is equal to the group number.Since K is a metal, its ion is a cation with a charge of 1, and it is a member of group 1A. K+ is hence the potassium's monoatomic ion.similarly oxygen is non metal therefore the monoatomic ion of oxygen is O2−.Learn more about monoatomic ions here:
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Which angle is complementary toE0D
Answer:
?
Explanation:
Is there supposed to be a picture or is that only 5he question?
Mercury has a density of 13.6 g/mL. What is
the mass in pounds of 556 mL of mercury?
Answer: 16.7 pounds of mercury
Explanation:
556 mL * 13.6 g/mL=
556 mL * 13.6 g/1 mL=
556 * 13.6/1=
556*13.6=
7561.6 g=
7561.6 g * 1 pound/453.592 g= ==> 1 pound=453.592 grams
7561.6 * 1/453.592=
7561.6/453.592=
16.67=16.7 pounds of mercury
The measure of how densely a material is packed together is called density. As the mass per unit volume, it has that definition. The mass in pounds of mercury is 16.635 pounds.
The term "density" refers to the ratio between the volume (the amount of space an object or substance occupies) and the mass (the quantity of material it contains). Density can also be defined as the quantity of mass per unit of volume. A dense object is one that is both hefty and small.
Density is the measure of an object's mass per unit volume. Kilograms per cubic meter (kg/m³) is the SI unit for density.
Density = Mass / Volume
13.6 g/mL = (m) / (556 mL)
m = 13.6 g/mL × 556 mL
m = 7561.6 g
1 g = 0.0022 pound
7561.6 g = 16.635 pounds
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ANSWER ASAP FORF BRAINLIEST!!!!!
For this and the following two questions, determine the density of a substance (in g/dL) of a sample with a mass of 8.3 x 10-1 dag and a volume of 4.10 mL. What is the right-most significant figure after performing the calculation in scientific notation?
The density of a substance (in g/dL) of a sample with a mass of 8.3 x 10-¹ dag and a volume of 4.10 mL is 202.44g/dL.
How to calculate density?The density of a substance is the measure of the mass of matter contained by a unit volume.
The density of a substance can be calculated by dividing the mass of the substance by its volume.
According to this question, a substance with a mass of 8.3 x 10-¹ dag has a volume of 4.10 mL. The density can be calculated as follows:
1 dag = 10g0.83 dag = 8.3g 1 millilitre = 0.01 decilitre4.10millitre = 0.041 deciliterDensity = 8.3g ÷ 0.041dL
Density = 202.44g/dL
Therefore, the density of a substance (in g/dL) of a sample with a mass of 8.3 x 10-¹ dag and a volume of 4.10 mL is 202.44g/dL.
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Indicate the type of observation that is best represented by the figures below.
Identifying Types of Observations
qualitative
quantitative
Identifying Types of Observations
qualitative
quantitative
Identifying Types of Observations
qualitative
quantitative
The observation shown in the image is qualitative.
Chemical analysis will be; Qualitative
Quantitative :In a qualitative chemical analysis, we can determine the components of a substance. In a quantitative analysis, we want to determine the amount of every of the components of a substance. Both sorts of analysis are of very much important in chemistry.
From the image, we could observe a change in color . Qualitative analysis might be carried out by the use of chemical reagents which could give positive tests like as change in color to show the presence or absence of some constituents of a given substance.
Qualitative :Qualitative analysis provides the details of the presence or nonappearance of different chemical components in a unknown sample. Qualitative chemical analysis, deals with the branch of chemistry identification of elements or grouping of elements provided in a sample. This techniques employed in qualitative analysis vary in complexity, depending on the nature of the sample
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You have been given a sample of dirt on the a slide. Describe the process of how you are going to find an organisms in that dirt sample.
PLEASE HURRY TYSM
The micromorphology is a process we are going to use to find an organisms in that dirt sample.
What is micromorphology?Micromorphology is defined as the fine level structure or morphology of an organism, mineral, soil and dirt component visible through microscope.
It is the microscopic study of soil, dirt and sediments.
It is a branch of soil science that is concerned with the description, interpretation and to a increasing extant the measurement of components, features and fabrics in soil or dirt at microscopic level.
Thus, the micromorphology is a process we are going to use to find an organisms in that dirt sample.
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Gold has an atomic mass of 197.0 grams per mole. How many moles of gold is 10 grams? How many gold atoms are found in 10 grams of gold?
The diagram below shows the different phase transitions that occur in matter.
Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?
A material changes physically when its state changes. They don't involve any alterations to the matter's chemical composition and are reversible. State changes that occur frequently include melting, freezing, sublimation, deposition, condensation, and vaporization.
Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?
"Arrow 4."
The energy required to go from a liquid to a gas is equivalent to that required to go from a gas to a liquid.
The process by which a substance transforms from the liquid phase to the gaseous state is known as boiling.
Diagram of water in phase:
Water changes from a liquid to a gas through the phase-shifting process of evaporation (water vapor).
Water changes its state from a gas to a liquid during the phase shift process known as condensation, and the resulting vapor turns into a cloud.
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Answer: arrow 4
Explanation: just took the test ;-)
A light green powder is
heated in a test tube. A gas is given off while
the solid becomes black. What type of change is
occurring? Explain your reasoning.
The sample is undergoing chemical change.
When one chemical material changes into one or more others, as when iron rusts, this is referred to as a chemical change.
There are five signs that shows us that the object is undergoing chemical change-
1. Change of colour
2. Change of temperature
3. Gas evolution
4. Precipitate formation
5. Production of smell
Therefore According to the given question the sample is giving off a solid precipitate of black colour. Also, there is evolution of gas so the given sample is undergoing a chemical change.
Additionally, this is a type of Decomposition reaction where in the gas evolved is a Carbon dioxide. Also the given sample is a Compound because two products are formed.
Hence, it is a chemical change.
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What is the atomic weight of gold ?
Answer:
the atomic weight of mass is 196.96657 u
2. Calculate the wavelength in nm of a photon with an energy of 2.57 x 10-19 J.
The calculated energy is 3.97×10⁻²¹J
A single photon has an energy of hv or = (h/2), where h is the Planck constant of 6.626 x 10-34 Joule-sec. If the photon's frequency is known, we may apply the formula E = h f to determine a photon's energy. The equation E = h c can be used to determine a photon's energy if its wavelength is known.
The photon has a 3.97 1021 J energy.
E=hf, with
Planck's constant is h, and the photon's frequency is f.
The second equation is f=c, where c is the speed of light and is the photon's wavelength.
F=c, so we can write
E=hcλ
=6.626×10⁻³⁴J⋅s×2.998×10⁸m⋅s⁻¹/5.00×10⁴×10⁻⁹
=3.97×10⁻²¹J
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A baseball is pitched to the batter,
What is the motion of the reference
Which of the following statements is TRUE?
A sodium (Na) atom has a larger radius than a potassium (K) atom.
A neon (Ne) atom has a smaller radius than an oxygen (O) atom.
A fluorine (F) atom has a smaller first ionization energy than oxygen (O) atom.
None of the statements are true.
pls explain the correct answer. i have to explain why its correct
Explanation:
hi I am not sure if you have any questions or concerns please visit the plug-in settings to try and you have any questions or concerns please visit
MATCH THE ANSWER TO SOLVE THE PH
1.
The pH of a solution with a [H3O+] = 7.5 x 10-4 M.
:
The pH of a solution with a [H3O+] = 7.5 x 10-4 M.
2.
The pH of a solution with a [H3O+] = 9.4 x 10-7 M.
:
The pH of a solution with a [H3O+] = 9.4 x 10-7 M.
3.
The pH of a solution with a [H3O+] = 3.7 x 10-14 M.
:
The pH of a solution with a [H3O+] = 3.7 x 10-14 M.
4.
The pH of a solution with a [H3O+] = 4.2 x 10-2 M.
:
The pH of a solution with a [H3O+] = 4.2 x 10-2 M.
a.pH = 2.6
b.pH = 4.9
c.pH= 1.4
d.pH= 3.1
e.pH = 14.6
f.pH = 8.0
g.pH = 13.4
h.pH = 6.0
The pH of a solution with a [H3O+] is 4.9 .Thus option (b) is true.
What is pH?pH is defined as negative log of H3O+ ion construction.
The pH can be calculated using formula:
pH = - log [H3O+].
[H3O+] = 7.5 x 10-4 M
pH = - log[7.5 x 10-4M]
pH = 4.9
The pH of a solution with a [H3O+] = 9.4 x 10-7 M = 2.6 = (a)
The pH of a solution with a [H3O+] = 3.7 x 10-14 M = 4.9 = (b)
The pH of a solution with a [H3O+] = 4.2 x 10-2 M = 2.6 = (a)
Thus, the pH of a solution with a [H3O+] is 4.9 .Thus option (b) is true.
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Hydrologists are closely monitoring the health of a reservoir to determine if it will remain a suitable habitat for a rare species of fish. Which species would make the BEST bioindicator?
Responses
A Species C, a microbacterium that records show has lived in the reservoir for at least 70 years and can tolerate only slight variations in pH and dissolved oxygen levels.Species C, a microbacterium that records show has lived in the reservoir for at least 70 years and can tolerate only slight variations in pH and dissolved oxygen levels.
B Species A, a migratory bird which stops in the reservoir zone twice a year in great numbers.Species A, a migratory bird which stops in the reservoir zone twice a year in great numbers.
C Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.
D Species D, a local hawk that lives in the reservoir zone year-round and preys upon some aquatic wildlife from the reservoir as well as many species from areas outside the reservoir zone.
The species that would make the BEST bioindicator is option C: Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures. Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.
What are reservoir?Humans, animals, and the environment are known to be the constituent of reservoirs. The source from which an agent is moved to a host may or may not be is known to be the reservoir.
For instance, since the soil serves as the reservoir for Clostridium botulinum, such that canned food harboring C. botulinum spores is the main reason of botulism diseases.
Therefore, The species that would make the BEST bioindicator is option C: Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures. Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.
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a.
Neutrons have a neutral charge, a mass of 1 amu, and are found in an atom's ______
b.
Protons are a little smaller than neutrons, they still have a mass of 1 amu though. They are found inside an atom's nucleus and carry a
_______ charge.
C.
Electrons almost have no mass, it's so small we say it is 0 amu. They sail around the nucleus in the _______ They have a ______
charge.
Neutrons have a neutral charge, a mass of 1 amu, and are found in an atom's Nucleus , Protons are a little smaller than neutrons, they still have a mass of 1 amu though. They are found inside an atom's nucleus and carry a positive charge, Electrons almost have no mass, it's so small we say it is 0 amu. They sail around the nucleus in the orbit, They have a negative charge
Atoms of all elements except for most atoms of hydrogen have neutrons in their nucleus unlike protons and electrons, which are electrically charged, neutrons have no charge they are electrically neutral. that's why the neutrons in the diagram above are labeled n⁰ and the zero stand for zero charge neutron has a neutral charge
Protons are found in the nucleus of the atom and this is a tiny, dense region at the center of the atom protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit proton carry positive charge in the nucleus of atom
Electrons are one of three main types of particles that make up atoms and protons and neutrons, which consist of smaller, simpler particles, electrons are fundamental particles that do not consist of smaller particles electron has 0 amu and they have negative charge around the nucleus in the in the orbit called electron
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Water is homogeneous substance true or false
Answer: pure water is homogeneous and pure substance.
Explanation: However, when a homogeneous substance consists of two or more different types of molecules uniformly intermingled with one another, then it’s called a homogeneous mixture. A mixture’s composition can vary, but a pure substance does not.
Answer:
True
Explanation:
since the gases and minerals dissolved in water are in the same state as water and they do not form separate layers
Choose your favorite element. Complete the blank periodic table entry for that element to the left. Research your element and write one interesting fact you discovered below
CAN YOU HELP ME, PLESE RIGHT NOW
Sodium is a metal that belongs to group 1 of the periodic table.
What is my favorite element?My favorite element is sodium. Sodium is found in group one of the periodic table. The element is univalent and also forms univalent positive ions. Like every other metal, sodium is able to react with dilute acids to liberate hydrogen gas.
Sodium is a light metal and is known to react with mercury to form the sodium mercury amalgam which is obtained during the electrolysis of sodium chloride. All of the compounds that are formed by sodium are ionic in nature. However the hydrides of sodium are unstable.
Sodium is highly reactive thus it must not be exposed to air since it could ignite spontaneously in air. As such, sodium must be stored under paraffin oil. All the compounds of sodium are ionic in nature.
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Choose the combination of factors that creates a thunderstorm
Relative Humidity
Low or high?
Air Temperature
Cold or warm?
Air Pressure
Low or high ?
Helpppp
Answer:
High humidity
Warm
High Pressure.
Answer:
Relative Humidity: high
Air Temperature: warm
Air Pressure: low
what is the mass of 3.2 mL of a liquid with specific gravity of 0.986?
The mass of 3.2 mL of a liquid with specific gravity of 0.986 is 3.155 g
What is density?The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as
Density = mass / volume
With the above formula, we can determine the mass of the liquid. Details below
How to determine the mass of the liquidThe following data were obtained from the question:
Volume of liquid = 3.2 mLDensity of liquid = 0.986 g/mLMass of liquid =?Density = mass / volume
Cross multiply
Mass = Density × Volume
Mass of liquid = 0.986 × 3.2
Mass of liquid = 3.155 g
Thus, the mass of the liquid is 3.155 g
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8. A 9.7 ounce milk shake costs $3.45. There are 16 ounces in a pound. Determine the cost of a 5.5kg milkshake.
(454g per pound)
(10^-3 kilo unit = 1 unit)
The cost of a 5.5kg milkshake if 9.7 ounce milk shake costs $3.45 is $68.915.
Cost of 9.7 ounce milk shake = $3.45
Conversion of ounces into poundOne pound is equal to 16 ounces.
1ounces contain 1/16 pound.
9.7 ounces contain (1/16) × 9.7 pound.
9.7 ounces contain 0.606 pounds.
Cost of 0.606 pounds milk shake = $3.45
Conversation of pound into Gram1 pound = 454g.
0.606 pounds = 454 × 0.606g
0.606 pounds = 275.12g
Conversation of gram into kilogram1gram = 10^-3 kilo gram
275.12 gram = 275.12 × 10^-3 kilo gram
So, cost of 0.27512 kg milk shake = $3.45
cost of 1 kg milk shake = $3.45/ 0.27512 = $12.53
cost of 5.5 kg milk shake = $12.53 × 5.5 = $68.915
Thus, we calculated that the cost of a 5.5kg milkshake if 9.7 ounce milk shake costs $3.45 is
$68.915.
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The mass unit associated with density is usually grams. If the volume (in mL or cm3 ) is multiplied by the density ( g/mL or g/cm3 ) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation.
If a large marshmallow has a volume of 2.75 in3 and density of 0.242 g/cm3 , how much would it weigh in grams? 1 in3=16.39 cm3 .
The mass of the marshmallow is 10.9 g.
What is the relationship between mass, volume and density of a substance?The mass of a substance is the quantity of matter present in that substance.
The volume of a substance is the amount of space a given mass of that substance occupies.
The density of a substance is the ratio of the mass and a given volume of that substance.
Therefore, the relationship between mass, volume and density is given below as:
Density = mass/ volumeFrom the data provided:
volume of the marshmallow = 2.75 in³
1 inch³ = 16.39 cm³
volume in cm³ = 16.39 * 2.75
volume of the marshmallow = 45.07 cm³
density of the marshmallow = 0.242 g/cm³
Mass of the marshmallow = volume × density
Mass of the marshmallow = 0.242 g/cm³ * 45.07 cm³
Mass of the marshmallow = 10.9 g
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6. CCC Patterns Compare the ions of elements listed in the table with the atoms of
the element. Based on the patterns in their particle compositions and charges,
write a definition for "ion."
CCC Pattern compare the ions of elements listed in the table with the atoms of the element. Based on the patterns in their particle compositions and charges, the definition of ion would be that CCC pattern compare ions of elements.
An ion is a structure in crystal system having regular repeating arrangement, which can be called as an ionic lattice.
Lattice is formed because ions attract each other and form a regular pattern with oppositely charged ion next to each other.
An atom is the smallest unit of an element that retains the chemical properties of element. Every atom includes a nucleus, generally containing both positively charged particles called ions and uncharged particles called ion.
In the space surrounding, the nucleus are negatively charged particles called electron.
Therefore, ions are oppositely charged particles in lattice.
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Oxygen has six electrons in its outer shell. How many electrons do you predict sulfur, selenium, tellurium and polonium will have in their outer shell? Why?
The number of electrons for sulfur, selenium, tellurium, and polonium will have in their outer shell is 6,6,6,6 respectively.
The electronic configuration of an element depicts the number of electrons in the outermost shell.Oxygen has six electrons which are for the configuration 1s22s22p4Similarly sulfur has the electronic configuration as [Ne]3s23p4So the number of outer shell electrons is 6Similarly, selenium has 34 atomic number, and electrons is 2,8,18,6 so the outer shell electrons is 6The number of valence electrons of tellurium is 6 as the electronic configuration is 2,8,18,18,6The number of valence electrons is 6The electronic configuration of polonium is 2,8,18,32,18,6So the outer shell electrons is 6To learn more about the outermost shell visit:
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Write orbital diagrams for each ion. Determine if the ion is diamagnetic or paramagnetic. Cd2+
The orbital diagram is shown below ,
The [tex]Cd^{+2}[/tex] ion is diamagnetic .
The Atomic number of Cd = 48
Electronic configuration of Cd is is [tex]1s^{2} 2s^{2}2p^{6} 3s^{2} 3p^{6} 3d^{10} 4p^{6} 4d^{10}5s^{2}[/tex] .
After the removing two electrons from Cd , Cd gets two positive charges and becomes [tex]Cd^{+2}[/tex] .
The electronic configuration of [tex]Cd^{+2}[/tex] is [tex]1s^{2} 2s^{2}2p^{6} 3s^{2} 3p^{6} 3d^{10} 4p^{6} 4d^{10}[/tex] .
The [tex]Cd^{+2}[/tex] has no unpaired electron . Hence , it is diamagnetic in nature .
The orbital diagram of is shown as follows,
The shell structure of a cadmium atom, which has 48 electrons, is 2.8. 18.18.2. Ground state gaseous neutral cadmium has the electron configuration [Kr] in its ground state.
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How long will it take a car to accelerate from 30 m/s to 60 m/s, if it’s accelerating at 5 m/s 2
Answer:
6 metres per second squared
Explanation:
Gain in velocity = 60 - 30 = 30 m/s.
Time taken for this gain = 5 seconds
Average acceleration = 30 / 5 = 6 m/s/s.
So, 6 metres per second squared.
Iron, carbon, and phosphorus are elements found in the periodic table. Tests involving these three elements would show that at normal room temperature
pOH of a solution that contains 3.5 g of sulfuric acid dissolved in 1.75 liters of
solution.
The pOH of a solution that contains the given volume and mass is 1.690.
Equation :To calculate pOH of sulfuric acid we must know the moles and concentration.
So, to calculate moles using formula,
moles = mass / molecular mass
Given,
mass = 3.5 g
volume = 1.75 lit
So,
moles of sulfuric acid = mass / molecular mass
Putting values,
moles of sulfuric acid = 3.5g / 98.079 g/mol
moles of sulfuric acid = 0.0357mol
Now to know the concentration we are using the formula,
Concentration of sulfuric acid = moles / volume
Putting values,
Concentration of sulfuric acid = 0.0357mol / 1.75l
Concentration of sulfuric acid = 0.0204 mol/l
pOH + pH = 14
pOH = -log(0.0204)
pOH = 1.690
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What is the mass in grams of 0.05 moles of gold?
The mass of 0.05 mole of gold is 9.85 grams.
Equation :The following equation relates the mass and molar mass of a substance to its mole:
Mole = mass /molar mass
We can determine the mass of gold using the formula above. This is attainable as follows:
0.05 mole = gold in one mole.
Molar mass of gold = 196.97 g/mol
Mole = mass / molar mass
0.05 = mass / 196.97
Mass = 0.05 × 196.97
Mass of gold = 9.85 g
Hence, the mass of the gold is 9.85 g.
Definition of mass :A physical body's mass is its total amount of matter. Additionally, it is a gauge of the body's inertia, or resistance to acceleration in the face of a net force The gravitational pull an object has on other bodies is also influenced by its mass. The kilogram is the fundamental unit of mass in the SI.
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Use
the periodic table to choose the element that matches each description.
halogen
group IIA:
A
nonreactive:
alkali metal:
DONE
Halogens are p-block elements, group IIA & alkali metal belongs to s-block and nonreactive elements are known as noble gases.
What is the periodic table?Chemical elements are listed on a periodic table according to their atomic number. Carbon and oxygen are two of the chemical elements listed in the periodic table.
What are the main features of the periodic table?The Periodic Table groups the elements according to their linked chemical and physical properties. The table consists of rows and columns. Vertical columns of the periodic chart represent groups. The table displays periods as horizontal rows.
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For a radioactive isotope with a half life of 2 seconds, how much of a 50 Ci sample of the isotope will
remain after 6 seconds?
0.125
a radioactive isotope with a half life of 2 seconds, how much of a 50 Ci sample of the isotope will remain after 6 seconds
as per the statement, we have got
The half life period is 2 second
6 second =2 sec / 6 sec = 3 half life periods.
The fraction of the material would remain after 6 second is
[tex]\frac{1}{2^3}[/tex] = 1 / 8 = 0.125
half-life is the amt of time it took for half of the atoms in a gien sample of radioactive substance to decay. radiocarbon dating or carbon-14 is a method for dating ancient materials that were once living.
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