A 5.00 l container is filled with 0.300 atm acetylene and 0.800 atm hydrogen, which react according to: C2H2(g) + 2 H2(g) C2H6
what is a reaction?
A chemical reaction occurs when two or more molecules collide with the right orientation and enough force to produce a new product. Atomic bonds are created and disrupted throughout this process. Products, as opposed to reactants, are the compounds that result from an interaction between two other substances.
Substances are made up of chemical components or chemical elements. The atoms that make up the reactants in a chemical reaction are rearranged to create different products. A essential aspect of life itself, as well as technology and civilization, are chemical reactions.
0.300 atm acetylene and 0.800 atm hydrogen are placed in a 5.00 l container, where they react as follows: C2H2(g) + 2 H2(g) C2H6.
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which is the hottest region of the bunsen burner flame? what is the approximate temperature of the flame? what is the commonly used gas in bunsen burner? what would happen to the flame if the air hole is closed? when heating glassware will you keep the air hole closed or open? explain.
The hottest part of the Bunsen flame, which is found just above the tip of the primary flame.
What is primary flame ?The main flame that gas welders employ is the neutral flame. There are two areas of a neutral flame: a hotter, lighter inner area and a cooler, darker outer area. A neutral flame produces a clean flame since the entire fuel gas is consumed during the operation.
The Bunsen flame's hotter region, immediately above the primary flame's tip, has a temperature of roughly 1,500 °C (2,700 °F). If there is insufficient air, the gas combination won't burn entirely and instead instead produce small carbon particles that, when heated to burning, give off light to create a brilliant flame.
Within the flame when burning hydrocarbon fuel, two processes are happening. The transformation of hydrogen and carbon into carbon monoxide and water is the first primary reaction. Carbon monoxide to carbon dioxide conversion is the secondary reaction; both are exothermic processes.
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What is the molarity of a naoh solution if 15.5 ml of a 0.220 m h2so4 solution is required to neutralize a 25.0-ml sample of the naoh solution?
The molarity of NaOH is 0.8 M.
What is Molarity?Molar concentration, also known as molarity, is defined as the number of moles of solute present in a given number of liters of solution, or moles per liter of solution.
The balanced equation for the reaction is;
[tex]2NaOH(aq) + H_{2} SO_{4} (aq) --------- > NaSO_{4} (aq) +2 H_{2} O (l)[/tex]
Moles = concentration x volume
thus;
0.220M x 0.0155L= 0.01 moles of [tex]H_{2} SO_{4}[/tex].
Using the mole ratio;
Moles of NaOH = Moles of [tex]H_{2} SO_{4}[/tex].×2
= 0.02 Moles
Therefore; moles of NaOH = 0.02 moles
But; Concentration = moles / volume
Thus; Concentration of NaOH = 0.02 / 0.025L
= 0.8M
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a student put a bottle of water and a can of sugared soda in the freezer to chill them quickly . when she took them out , the bottle of water was frozen but the can of soda was not. explain why this happen
Answer:
it's because the liquid in the bottle is supercooled
Please help! will give brainlyst to 1st answer! help ASAP!!! 30 POINTS!!!!
Answer:
The answer to your question is D. 4.5 seconds hope this helps ;)
Why is the bombardier beetle relevant in the evolution vs. creationism discussion? what do you think the bombardier beetle shows us in this debate?
Bombardier beetle is relevant in evolution vs. creationism as creationists use bombardier beetle to challenge evolution whereas scientists say species may have evolved the ability to survive toads’ digestive system.
A subgroup of ground beetles known as bombardier beetles includes several hundred distinct species. To defend themselves from predators, these insects have tools.
When agitated, the beetle uses unique glands in its abdomen to spray a boiling chemical solution onto the face of its predator. Hydroquinone and hydrogen peroxide are combined to create the solution, which they then mix and let loose on their foes.
Even the bombardier beetle could suffer devastating effects from any change to these two substances.
Therefore, evolution is not supposed to occur in a sound manner because it could have disastrous effects and lead to modification instead of modification.
So, while it may be appropriate in a very small number of circumstances, evolution is not appropriate in general.
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The valence electron configuration for an unknown element is xs² xp, where x is an integer. Based on your knowledge of ion formation, predict the charge for the ion that would form when this element loses or gains electrons.
The element with electronic configuration xs² xp⁴ will gain 2 additional electrons resulting in the formation of an anion (negative ion), giving the element a charge of -2.
A charged atom is termed an ion and it is formed when an atom loses or gains electrons that are present in its outermost valence shell.
When an atom loses electrons, it turns into an anion and acquires a negative charge, whereas when it gains electrons, it turns into a cation and acquires a positive charge.
We now have an unknown element with the electronic setup xs² xp⁴. The electrical configuration shows that the element has four valence electrons in its outermost shell and requires two more electrons to complete its octet. As a result, the element will gain two more electrons, resulting in the formation of an anion (negative ion) with a charge of -2.
Note: Since losing four electrons is not possible, the element will gain electrons much more easily.
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Atoms of which elements form bonds without satisfying the octet rule?
O potassium (K) and sodium (Na)
O neon (Ne) and argon (Ar)
• nitrogen (N) and fluorine (F)
• helium (He) and hydrogen (H)
Option (D) helium (He) and hydrogen (H) is the right answer.
The term "chemical compound" refers to a combination of two or more chemical elements, whether they are similar or dissimilar. For instance, the chemical compound H2O is made up of two oxygen atoms and one hydrogen atom.Ionic, covalent, and hydrogen bonds are the three basic types of chemical bonds that are used to generate these chemical compounds from their component atoms.Helium and hydrogen are exceptions to this octet rule because they do not require 8 electrons to finish their while forming the bond with another element, the valence shell.Most elements from the periodic table generally follow the octet rule when forming the bond with the other elements, which is to complete their outermost shell with eight electrons.Hence we can consider that Option(D)helium (He) and hydrogen (H) is the right answer.To learn more about octet rule visit:
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Answer: Helium, Hydrogen
Explanation: I got it right
convert 360mL of hydrochloric acid into L
Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. true false
Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.
A multivitamin is a dietary supplement that contains vitamins, dietary minerals, and other nutritional components. These medications can be purchased as tablets, capsules, pastilles, powders, liquids, or injectable formulations.
According to Wong, the main function of a multivitamin is to close nutritional gaps and ensure that people get their recommended daily intake of minerals including calcium, magnesium, dietary fibre, potassium, choline, and underconsumed vitamins A, C, D, E, and K.
Therefore, multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.
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Coordination complexes can have different types of isomers. compare the types of isomerism in another pair of related coordination complexes. how are these two complexes related to each other?
Isomers are formed when coordination complexes with two different ligands in the cis and trans positions of a ligand of interest. The octahedral[tex][Co (NH _{3} )_{4} Cl _{2} ] ^{+}[/tex] ion, for example, has two isomers. The two chloride ligands are adjacent to each other in the cis configuration.
Do coordination molecules have various isomers of different types?The isomers that coordination compounds display include many that are distinct as well as the same isomers that organic compounds display. Compounds known as isomers have distinct structural formulas but the same molecular formula and may not always have the same characteristics.
Which two sorts of isomers are there?Stereoisomerism and structural isomerism are the two basic types of isomerism (spatial isomerism). Structural isomers are isomers that differ in structure or kind of bond and have the same number of atoms of each kind but differ in how those atoms are connected to one another.
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When a forensic analyst determines the chemical composition of a preparation that may contain illicit drugs such as heroin, cocaine, or barbiturates, this is an example of what?.
this is an example of Identification
Technicians in forensic science work at crime scenes and in labs. Typically, forensic science technicians do the following tasks at crime scenes: Investigate crime scenes to decide what evidence needs to be gathered and how. The crime scene and the evidence should both be photographed. In forensic crime labs, forensic DNA analysts perform analyses on samples collected from crime scenes. While some forensic DNA analyzers work for privately owned forensic laboratories, the majority of them are employed by local, state, or federal law enforcement or governmental organizations. The definition of forensic analysis is a thorough procedure for identifying, looking into, and recording the cause, progression, and effects of a security incident or violation of local, state, and organizational regulations.
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What is the molarity of a naoh solution if 15.5 ml of a 0.220 m h2so4 solution is required to neutralize a 25.0-ml sample of the naoh solution?
The molarity of a NaOH solution is 0.273
How do we find the Molarity of NaOH solution?
The molarity of the NaOH solution used in the neutralization reaction has been 0.273 x [tex]10^{-3}[/tex] M.
The neutralization reaction has resulted in the formation of the salt and water on reacting an acid with a base. In the neutralization reaction, the strength of acid and base can be given as
For the neutralization of 1 mole of sulfuric acid, 2 moles of NaOH have been required.
[tex]2NaOH + H2SO4[/tex] →[tex]Na2SO4 + H2O[/tex]
The moles of sulfuric acid can be given as:
Moles = Molarity × Volume
Given, the molarity of acid (H2SO4) = 0.220 M
The volume of acid = 15.5 ml = 0.0155 L
Volume of base (NaOH) = 25 ml = 0.025 L
Moles of H2S04 = 0.220× 0.0155mol
Moles of H2SO4 = 3.41 mol.
Since 1 mole of H2SO4 = 2 moles NaOH
3.14 moles of H2SO4 = 3.14 × 2 moles NaOH
3.14 moles of H2SO4 = 6.28 moles of NaOH.
The neutralization of 0.220 M H2SO4 requires 6.28 moles of NaOH. The strength of the NaOH solution will be:
Molarity =[tex]\frac{Moles}{Volume(L)}[/tex]
Molarity = [tex]\frac{6.28}{0.025}[/tex]
The molarity of a NaOH solution is 0.273
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a chemist has a block of copper metal (density is 8.96 g/ml). they drop the metal into a graduated cylinder containing water, and find the volume change is 2.30 ml. what is the mass of the block, in grams?
The mass of the block is 20.61 grams.
d(copper metal) = 8.96 g/ml; density of a copper metal
V(copper metal) = 2.30 ml; the volume of a copper metal
m(copper metal) = d(copper metal) x V(copper metal)
m(copper metal) = 8.96 ml x 2.30 ml
m(copper metal) = 20.61 g; mass of a copper metal
Volume is the amount of space that a substance occupies.
Density is the mass of an object divided by its volume. The SI derived unit for density is the kilogram/cubic meter, but chemist usually use gram per milimeter.
Mass is a fundamental measure of the amount of matter in the object.
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Calculate the mass of khc8h4o4 that reacts with 15ml of the 0.15 m naoh solution.
The mass of khc8h4o4 that reacts with 15ml of the 0.15 m naoh solution is 0.4595 g
What is mass?
0.015 L x 0.15 M= 0.00225 mol NaOH, 0.00225 mol NaOH x 1 mol KHC8H4O4/1 mol NaOH=0.00225 KHC8H4O4, 0.00225 KHC8H4O4 x 204.23 g/mol/1 mol
KHC8H4O4=0.4595 g
Mass is a physical body's total amount of matter. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram serves as the SI's fundamental mass unit.
Therefore,
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d. Nucleus - storage of nutrients
5. Which laboratory procedure is represented in the diagram
below?
a.
b.
c.
Placing a coverslip over a specimen
Removing a coverslip from a slide
Adding stain to a slide without
removing the coverslip
d. Reducing the size of air bubbles
under a coverslip
6. While viewing a specimen under high power of a compa
be of
Often microscopic examination of a specimen involves many procedures to be followed, from slide preparation to adjust the focal length in the microscope. These steps are of paramount importance for microscopic examinations.
Reducing the size of air bubbles under the coverslip cannot be done easily after the coverslip is put over the specimen. Preferably a needle is used while cautiously putting the coverslip over the specimen to avoid air bubbles. Though adding stains along the edges may work for some time, it is better to do the step of covering with coverslip one again cautiously.
The given picture shows that it is option 4 that seems to be correct than options 1, 2, and 3. We often add stain or solution to a slide without removing the coverslip. Because to prevent air bubble formation and also to reduce excess stain, this method of stain addition is good.
Placing a paper towel to soak up excess liquid is good for the slide to look neat and tidy with even diffusion of stain throughout the coverslip. Thus it makes the observation via microscope very legible and clear with proper light adjustment.
Hence proper microscopic examination and the steps prior to it ( preparation of slides) are of paramount importance for one to excel in this field.
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Ions and polar molecules can cross the plasma membrane in regions where the membrane has incorporated _____.
Ions and polar molecules can cross the plasma membrane in regions where the membrane has incorporated transport proteins.
The polar molecule is what?
A polar molecule is one that has a slight positive charge on one end and a slight negative charge on the other. A polar molecule is a diatomic compound, such as HF, that contains a polar covalent link.
What are transport proteins?
Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport.
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of a certain compound , known to be made of carbon and hydrogen, and to have a molecular molar mass of , is burned completely in excess oxygen, and the mass of the products carefully measured:
The compound X that have a Molecular molar mass of 138 g/mol is
Given here,
Compound x - 6g
malar mass of x - 138g/mol
Carbon dioxide - 13.39 g
water - 2.35g
So,
The moles of Water will be 0.13 mol
The moles of Hydrogen will be 0.26
Mass of hydrogen = 0.26 g
The moles of CO2 will be 0.304
The moles of carbon will be 0.304
Mass of Carbon = 3.65 g
Mass of Oxygen = Total mass of the compound - (mass of C + mass of H)
= 6.0 g - ( 3.65 + 0.262 ) g
= 2.09 g
Moles of oxygen = 0.131
Since Oxygen has the least moles, to find the molar ratio of the constituent atom, divide the moles of an atom from oxygen.
C = 0.304/0.131 = 2.8
C = 0.26/0.131 = 2
C = 0.131/0.131 = 1
convert 2.3 into a whole number
C = 2.3*3 = 7
H = 2*3 = 6
O = 1*3 = 3
Hence formula will be C7H6O3
What is molar mass?
The molar mass of a chemical compound is determined in chemistry by dividing the mass of a sample of that compound by the quantity of that compound, which is the number of moles in that sample, measured in moles. The molar mass of a substance is a bulk attribute rather than a molecular one. The compound's molar mass is an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights. For converting between a substance's mass and amount in bulk amounts, the molar mass is the proper unit.
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Ammonium sulfide and zinc chloride solutions are mixed. what is the balanced chemical reaction?
Combining zinc chloride and ammonium carbonate aqueous solutions. The chemical process is shown to be balanced as;
(NH₄)2CO₃ (aq ) + ZnCl₂ ( aq ) -------- > ZnCO₃ ( s ) + 2 NH₄Cl (aq )
What is an aqueous solutions?In other words, the ions and molecules that make up the solute (dissolved) are surrounded by the water molecules and incorporated into their web of connections.
The kind of chemical bonds holding something together determines whether or not it will dissolve in water. Examples of watery solutions include rain, seawater, acid, base, and salt solutions.
Solutions that contain water as a solvent are known as aqueous solutions. (For instance, sugar solution).
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Billy decides to test the factors that affect plant growth. he uses sunflowers, daisies, and bean plants. he gives some of the plants fertilizer and other plants only water. he plants the sunflowers in a garden outside but plants the daisies and bean plants in small containers inside his house. he measures the height of the plants each day using a ruler. what is wrong with billy's experiment?
Billy conducted an experiment to check the growth of different types of plants in different factors. He uses plants like sunflowers, daisies, and bean plants.
He planted the sunflower outside in a garden and plant the daisies and bean plants inside his house in a small container. He provides some of the plants only water and other plants only fertilizers. Then he started measuring the height of the plants everyday using a ruler.
The mistake with the Billy's experiment is that he uses too many manipulated variables. In his experiment he uses too many plants and flowers. Also, he uses fertilizers in only some of the plants and not in others.
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In wintertime, Jerron is in a room with a furnace.
He builds a fire inside the furnace in order to keep warm.
After 20 minutes, the entire room increased its temperature by 15 degrees.
1. What method of heat transfer occurred?
2. Describe how it worked in the room.
The heat that reaches Jerron in the room from the furnance does so by radiation
What is radiation?The term radiation has to do with a situation in which heat is able to move from one point to another without a material medium. We know that there are three basic modes of heat transfer and these are;
ConductionConvection RadiationConduction and convection both require a medium of propagation while radiation does not. The heat that reaches you in the room does so by radiation and this is because there is no material medium that carries the heat from the furnace to you.
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How two jars marked with the same carbon hydrogen and oxygen content could taste so different?
One jar appears be much sweeter than other
In the two jar marked with the same carbon hydrogen and oxygen content could taste so different because carbohydrates contain just carbon, hydrogen and oxygen atoms that's why in the one jar it appear much sweeter taste than other and in the carbohydrates all are connected in the particular way carbohydrates are classified into three subtypes: monosaccharides, disaccharides, and polysaccharides That's why in two jar marked with the same carbon hydrogen and oxygen content could taste different.
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Ls: mitosis and meiosis both produce new cells through cell division. however, the division process differs due to the kind of cell being produced. how is meiosis different from mitosis?
Mitosis produces two genetically identical diploid cells, on the other hand, Meiosis produces four genetically identical haploid cells.
Mitosis: It can be described as the process of division in every living cell. It has four basic stages for division- prophase, metaphase, anaphase, and telophase. The division of cells is based on Asexual Reproduction. The division happens when the nuclear membrane has broken down, and spindle fibers (microtubules) attach to the chromatids at the centromere and pull apart the chromatids. The chromatids reach out to the two separate ends of the cells, then the spindle fibers disintegrate and a nuclear membrane rebuilds around the chromosomes making two nuclei. Both of them are identical to the original nuclei.Meiosis: It is a process of cell division where the daughter cells have half the number of chromosomes as the original cell. In humans, this means that the chromosome reduces from 46 to 23. The joining of both male & female gametes results in restoring chromosomes to 46. In meiosis, homologous chromosomes are separated into different nuclei. Then chromosome number is divided in half. Chromatids are also separated into separate nuclei. Again, it is spindle fibers that “pull” the chromosomes and chromatids apart in meiosis.
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what is the average rate of the reaction over the first 580 seconds? 1.6 × 10−3 1.9 × 10−3 2.0 × 10−3 2.2 × 10−3
The average rate of reaction for the first 580 seconds is 2.0 × 10−3 M/s.
What is rate of reaction?The pace at which a chemical reaction occurs is known as the reaction rate, which is proportional to both the increase in a product's concentration per unit time and the decrease in a reactant's concentration per unit time.
There is a wide range in reaction times. As an illustration, the oxidative rusting of iron beneath the Earth's atmosphere is a slow process that can take many years, whereas the burning of cellulose in a fire is a fast process that happens in a matter of seconds. For the majority of reactions, the rate drops as the reaction develops. The pace of a reaction can be calculated by tracking the concentration changes over time.
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A solution is prepared by dissolving 42.9 g cesium chloride in 60.0 g water. the volume of the solution is 63.3 ml. calculate the mole fraction of cesium chloride.
The mole fraction of cesium chloride is 0.06296.
The mole fraction is the product of the number of molecules of a specific component in a mixture and its total molecular weight.
By mixing 60.0 g of water with 42.9 g of cesium chloride, a solution is created.
The volume of the solution is given as 63.3 ml.
The solute in this aqueous solution is cesium chloride. From their given masses and known molar masses, we require the moles of water and cesium chloride:
n( CaCl ) = 42.9 g × ( mol ) / ( 168.36 g )
n( CaCl ) = 0.254 mol
n( water ) = 60.0 g × ( mol ) / 18.01 g
n( water ) = 3.78 mol
Therefore, the mole fraction of cesium chloride solute will be:
( 0.254 mol ) / ( 0.254 mol + 3.78 mol ) = 0.06296
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help help help pls pls
Answer:
2
Explanation:
What descriptive term is applied to the type of diene represented by 2,4-hexadiene?.
Conjugated diene is applied to the type of diene represented by 2,4-hexadiene.
what is conjugated diene?
A chain of hydrocarbons known as a diene contains 2 double bonds, which may or may not be close to one another. This section compares two nearby double bonds with an emphasis on the delocalization of π systems. The configurations of these double bonds can influence how reactive and stable a molecule is.
2 double bonds and one single bond divide a conjugated diene into two halves.Nonconjugated (Isolated) Dienes have more least 1 single bond separating two double bonds.Two double bonds that are joined to the same atom to form cumulated dienes.Conjugated dienes are more stable than unconjugated and cumulated dienes because a molecule is more stable when it has a higher electron density delocalized.
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The complete question is :
What descriptive term is applied to the type of diene represented by 2,4-hexadiene?
A. Cumulated diene
B. Conjugated diene
C. Alkynyl diene
D. Isolated diene
E. None of the above
which bonds often bind fifferent parts of a moleule into a specific three-dimensional shape, hydrogne, amino acid, oxyeng, or carbon?
The bonds that often bind different parts of a molecule into a specific three-dimensional shape is hydrogen.
What is specific three-dimensional shape?
In geometry, a 3-dimensional form may be described as a strong parent or an item or form that has 3 dimensions—length, width, and height. Unlike two-dimensional shapes, 3-dimensional shapes have height, that is similar to thickness or depth.
The bonds that often bind different parts of a molecule into a specific three-dimensional shape out of hydrogen, amino acid, oxygen and carbon, is hydrogen.
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A major concern about increasing global temperatures is that a large portion of polar ice could detach and melt into the ocean. if this happened, which two spheres would interact? hydrosphere and atmosphere hydrosphere and atmosphere cryosphere and biosphere cryosphere and biosphere cryosphere and hydrosphere cryosphere and hydrosphere geosphere and atmosphere
Cryosphere and hydrosphere would interact.
There are five main Earth's spheres: the geosphere, the hydrosphere, the cryosphere, the biosphere and the atmosphere.
The hydrosphere is all the liquid water masses on the Earth.
The cryosphere is all the frozen water masses on the Earth.
In a high temperatures ice will turn into the liquid water and interact with each other.
The spheres interact with one other. For example, plants (biosphere) produce oxygen (atmosphere) from carbon dioxide (atmosphere).
Substances in different spheres are recycled and turned into other phases and forms. This is important cycle and without that, there is no life on Earth.
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Answer: Cryosphere and Hydrosphere
Explanation:
Cryosphere and hydrosphere would interact.
Cryosphere is the frozen water part of Earth. Hydrosphere is all the water on Earth's surface
A science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls from the same height. They time how long it takes the balls to hit the ground. What are the students comparing?(1 point)
the height from which each ball is dropped
the height from which each ball is dropped
the time it takes for each ball to fall
the time it takes for each ball to fall
the mass of each ball
the mass of each ball
the gravitational attraction of each ball
the gravitational attraction of each ball
In this experiment, the students are comparing the time it takes for each ball to fall (option B).
What is an experiment?Experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
According to this question, a science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls from the same height and time how long it takes the balls to hit the ground.
In this experiment, the masses of the different ball is the independent variable while the time it takes for each ball to fall is the dependent variable.
Therefore, it can be said that the students are comparing the time it takes for each ball to fall.
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1) Explain in as much detail as possible what the following balanced equation tells you. You answer should include information from the state symbols. P4(s) + 5 O₂(g) -> P4O10(S)
The following equation is in balance. To create one molecule of P₄O₁₀ (a solid)., combine one molecule of P₄ (a solid) with 5 molecules of O₂ (a gas)
How do you construct a balanced equation?The reactants and products are placed on the left and right sides of the arrow, respectively, to create a balanced equation. Coefficients, which appear as a number before a chemical formula, represent moles of a compound. The number of atoms in a single molecule is indicated by the subscripts (numbers below an atom).
What is an example of a balanced equation?For instance, think about the response: 2Mg(s)+O₂(g)⟶2MgO(g) Two magnesium and two oxygen atoms are present in this reaction on both the reactant and product sides. As a result, the chemical reaction complies with the rule of conservation of mass, making it a balanced chemical equation.
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