If one had a parking garage that was filled with cars such that each parking spot was occupied, it would make intuitive sense that if we had twice as many cars, the parking garage would need to be twice as big to maintain car density within the garage. But, is the same thing true if one is concerned with gas particles and not cars? The answer is Yes. More than a century ago Italian chemist Amadeo Avogadro postulated that V, the volume of a gas and n, the number of gas particles are directly proportional, when the temperature and pressure are held constant. Part A Avogadro's Law states that at a given temperature and pressure, what quantity is constant? ► View Available Hint(s) O V + n Vxn Submit Part B If it takes three "breaths" to blow up a balloon to 1.2 L, and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 L balloon? Express answer to two decimal places and include the appropriate units. ► View Available Hint(s) μÀ Value Units ?

Answer:

g/kg

Explanation:

they are both a unit of weight

notice how the others have a unit of weight and then measurement? g/kg are two units of weight

Answer:

Grams/kg

Explanation:

Answer:

C: 40.

Explanation:

To answer this question, we need to use the concept of heat transfer and the law of conservation of energy, which states that energy cannot be created or destroyed, only transferred or transformed from one form to another.

When two substances are in contact, heat can flow from one substance to another until they reach thermal equilibrium (i.e., they have the same temperature). In this case, Substance 1 loses 40 calories of heat, which means it gives off 40 calories of heat to Substance 2. Therefore, Substance 2 will gain 40 calories of heat to reach thermal equilibrium.

Therefore, the correct answer is option C: 40.

According to research, the ear is a complex organ that meets hearing, being of great importance to humans.

Hearing is a physiological process where sound waves, which are vibrations, enter through the outer ear and reach the middle ear, causing the eardrum to vibrate.

In this sense, the vibrations, in turn, cause the movement of small bones called stirrup, anvil and malleus, where they reach the organ of Corti, stimulating the auditory nerve and finally become nerve impulses that reach the brain.

Therefore, we can conclude that according to research, hearing is a process that implies that sound waves first impact the eardrum until finally reaching the auditory centers of our brain.

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Answer:

It tells you that carbon dioxide is required for photosynthesis to work.

Explanation: Since soda lime absorbs CO2, the plant has no access to it and dies as a result, showing you that it is required for photosynthesis to work, even though it has access to everything else it needs.

To solve such this we must know the concept of photosynthesis reaction. Therefore, carbon dioxide  is one of the necessary reactant  for photosynthesis.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved.

Photosynthesis is the process through which plants and other organisms convert light energy to chemical energy. Light energy is absorbed and used to transform water, carbon dioxide, plus mineral to oxygen and power organic molecules in photosynthesis in green plants.

Because soda lime collects CO\(_2\), the plant does not have access it and killed as a result, demonstrating that it is essential for photosynthesis to occur despite having access to everything it requires.

Therefore, CO\(_2\) is necessary for photosynthesis.

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This question is incomplete, the complete question is;

Consider an experimental setup with two compartments separated by a phospholipid bilayer membrane containing ion channels selectively permeable only to chloride ions. The left compartment (also called inside) contains 1 mM Cl- and the right compartment (also called outside) contains 100 mM Cl-. What will the electrical potential be when the system attains equilibrium? [ assume body temperature; log 100 = 2, log 10 = 1, log 1 = 0, log 0.1 = -1, log 0.01 = -2]

Options;

a) -62 mV

b) -124 mV

c) +62 mV

d) 0 mV

e) +124 mV

Answer:

the electrical potential be when the system attains equilibrium is  –124mV

Option b) –124mV is the correct answer

Explanation:

Given the data in the question;

Two compartments are divided by lipid bilayer;

In inside compartment Cl- ion concentration- 1mM and out side of the cell concentration is 100mM

now we apply the Nernst equilibrium potential equation;

Chlorine ion valency is z = –1

So

\(E_{eq}\) = 62/z × log(ion outside/ ion inside) [for Cl‐ ions]

\(E_{eq}\) = (62 / –1) x log(  100 / 1 )

 \(E_{eq}\) = -62 x 2 =

\(E_{eq}\)  = –124mV

Therefore, the electrical potential be when the system attains equilibrium is  –124mV

Option b) –124mV is the correct answer

Taking into account the reaction stoichiometry and limiting reagent, 26.72 grams of Na₂SO₄ are formed when 22 grams of NaOH reacts with 21 grams of H₂SO₄.

In first place, the balanced reaction is:

2 NaCl + H₂SO₄ → Na₂SO₄ + 2 HCI

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

NaCl: 2 moles ×58.45 g/mole= 116.9 grams

H₂SO₄: 1 mole ×98 g/mole= 98 grams

Na₂SO₄: 1 mole ×142 g/mole= 142 grams

HCI: 2 moles ×36.45 g/mole= 72.9 grams

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 116.2 grams of NaCl reacts with 98 grams of H₂SO₄, 22 grams of NaCl reacts with how much moles of H₂SO₄?

\(mass of H_{2} SO_{4} =\frac{22 grams of NaClx98 grams of H_{2} SO_{4} }{116.2 grams of NaCl}\)

mass of H₂SO₄= 18.55 grams

But 18.55 grams of H₂SO₄ are not available, 21 grams are available. Since you have less moles than you need to react with 22 grams of NaCl, H₂SO₄ will be the limiting reagent.

The following rules of three can be applied, considering the limiting reagent: if by reaction stoichiometry 116.9 grams of NaCl form 142 grams of Na₂SO₄, 22 grams of NaCl form how much mass of Na₂SO₄?

\(mass of Na_{2}S O_{4} =\frac{22 grams of NaClx142 grams of Na_{2}S O_{4}}{116.9 grams of NaCl}\)

mass of Na₂SO₄= 26.72 grams

Then, 26.72 grams of Na₂SO₄ are formed when 22 grams of NaOH reacts with 21 grams of H₂SO₄. The correct answer is first option.

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The greater the electrostatic attraction in the molecule, the greater the boiling point of the compound.

We have to note that the molecular structure of a compound determines whether the compound will be polar or not and this in turn affects the electrostatic forces in the molecule.

Also, the electrostatic forces in the molecule determines certain important properties of the compound such as boiling point. The greater the electrostatic attraction in the molecule, the greater the boiling point of the molecule.

Hence, the  statement which correctly describes the relationship between molecular structure, the strength of electrostatic forces  between molecules, and the boiling point of a substance is; "molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance."

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Learn more:

Let us first consider the reaction of zinc and hydoxide ion :

• Zn^2+(s) + 2OH^-1(aq) ↔ Zn(OH)2 (aq)

ratio> 1 : 2 :1

From the above, we can see that the ratio of zinc ion to hydroxide ion is 1:2, the answer is True .

shared

Covalent bonds are characterized by the sharing of valence electrons.

Electronegativity

Covalent bonds occur between atoms that have similar electronegativity. Remember that electronegativity is how strongly an atom pulls electrons toward itself. So, if 2 atoms have similar electronegativities, then they will pull somewhat equally upon the electrons and share them. Most commonly, covalent bonds occur between nonmetals.

Ionic Bond

The second major form of bonding is ionic bonding. Ionic bonds form when there is a large difference in electronegativities. The difference is great enough that one of the atoms will completely lose one or more electrons, while the other will take the electrons. Since electrons are being transferred, the atoms become ions. Ionic bonds commonly occur between metals and nonmetals.

Answer:Cellular respiration is not the same as breathing, but they are closely related

Explanation: When you breathe in, you take in the oxygen your cells need for cellular respiration. When you breathe out, you get rid of carbon dioxide that your cells produce during cellular respiration.

Answer:

b

Explanation:

because it be an the only answer there

Answer: No that is false.

Explanation: There are 6 basic elements of life here they are. Have cells, have chemicals, respond to stimuli, reproduce, grow and develop, and use energy.

Answer:Answer:

Properties of ionic compounds

Ionic compounds have regular structures, called giant ionic lattices. In a giant ionic lattice, there are strong electrostatic forces of attraction acting in all directions between the oppositely charged ions. The structure and bonding of ionic compounds explain their properties.

Energy must be transferred to a substance to make it melt or boil. This energy overcomes the strong electrostatic forces of attraction which act in all directions between the oppositely charged ions:

some forces are overcome during melting

all remaining forces are overcome during boiling

The more energy needed, the higher the melting point or boiling point. Since the electrostatic forces of attraction between oppositely charged ions are strong, their melting and boiling points are high.

Explanation

Ionic compounds are held together by electrostatic forces between the oppositely charged ions. These forces are usually referred to as ionic bonding. As the ionic lattice contains such a large number of ions, a lot of energy is needed to overcome this ionic bonding so ionic compounds have high melting and boiling points.

The strength of the ionic bonds depends on the charge on the ions. Ions with higher charge will have stronger forces between them, so will need more energy in order to overcome these forces.

Explanation:

Answer:

Exothermic Reaction

Product  = Calcium hydroxide + hydrogen

Explanation:

The units for atomic mass are atomic mass units (amu).  the atomic mass of copper for this location is 63.55 amu.

The chemical symbol Cu stands for copper. Copper is a soft, malleable, ductile metal that is a good conductor of heat and electricity. Copper is one of the most widely used metals in electrical and electronic equipment due to its superior conductivity and non-corrosive properties. This metal is widely used in wiring, roofing, plumbing, and electronic applications. Its atomic mass is 63.55 amu.The atomic mass of copper for this location can be determined using the following formula:

Atomic mass = (mass of isotope 1 x relative abundance of isotope 1) + (mass of isotope 2 x relative abundance of isotope 2)The atomic mass of copper for this location

= (62.93 x 0.6915) + (64.93 x 0.3085) = 63.55 amu

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Answer:

Heat deals more with thermal energy whereas temperature deals with molecular kinetic energy.

The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.

The heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:

q = m x Hv

where:

First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:

moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol

Thus:

q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ

In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.

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Answer:

d=m/

Explanation:

d is density, m is mass, v is volume

Given: m =10.4g, v=12.2mL

substituting in equation,

d=10.4/ 12.2

d=0.8524g/mL

To learn more about density:

The density of the liquid is 0.852 g/mL.

To calculate the density of the liquid, we need to use the formula:

Density = Mass / Volume

Given that the mass of the liquid is 10.4 g and the volume is 12.2 mL, we can substitute these values into the formula:

Density = 10.4 g / 12.2 mL

Simplifying this expression, we find:

Density = 0.852 g/mL

Density is a physical property of a substance and is defined as the amount of mass per unit volume. In this case, the density tells us that for every milliliter of the liquid, there is 0.852 grams of mass. The units of grams per milliliter (g/mL) indicate that the density is a ratio of mass to volume.It is important to note that the density of a substance can vary with temperature, so this value is only valid under the conditions at which the measurement was made. Additionally, the density can provide valuable information about the identity of a substance, as different substances have different densities.

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The number of grams of sodium sulphate required to prepare 500mL of 0.2 M solution is 14.204grams.

The mass of a substance can be calculated by multiplying the molar mass of the substance by its number of moles as follows;

mass = molar mass × no. of moles

According to this question, we are required to prepare 500mL of 0.2 M solution. The number of moles in the substance can be calculated as follows;

no of moles = 0.5L × 0.2M = 0.1moles

molar mass of sodium sulphate = 142.04 g/mol

mass = 142.04 × 0.1 = 14.204grams.

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Answer:

The equation for a volume of a sphere is V= (4/3)πr3

The above equations says we need to find the radius of our sphere. According to https://www.ptable.com/ the radius of a gold atom is 144 pm.

The questions wants the answer to be in cm3 which means we need to convert picometers into centimeters. 1cm= 1010pm

144pm x (1cm/1010pm) = 1.44 x 10-8cm

Now we plug the radius of the gold atom into the volume equation.

V= (4/3)π(1.44x 10-8cm)3 -----> Answer= 1.25x10-23 cm3

The given chemical equation, 2N₂ + 3H₂ <==>2NH3, is an example of a reversible reaction.option A.

The double arrows between the reactants and products indicate that the reaction can proceed in both directions, forming both products and reactants.The reversible reaction, also known as a chemical equilibrium reaction, refers to a chemical reaction that can occur in both forward and reverse directions. It occurs when reactants are converted into products, and the products are also converted back into the original reactants.A reversible reaction can be identified by the symbol “<==>” or “⇌” that appears between the reactants and products in the chemical equation. It denotes that the reaction is in a state of chemical equilibrium. When the reactants and products have achieved equilibrium, the rate of the forward and reverse reactions is equal, and there is no further net change in the amounts of the reactants and products.A combustion reaction is a type of exothermic reaction in which a substance reacts with an oxidizing agent to produce heat and light. A one-way reaction is a type of reaction that occurs in only one direction and cannot be reversed without significant changes to the reaction conditions, such as changing the temperature or pressure.A reversible reaction, unlike a one-way reaction, can occur in both directions and reach equilibrium when the forward and reverse reaction rates are equal.option A.

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Answer:

one parent

Explanation:

As one parent cell divides it into two daughter cells and so on.

An exothermic reaction releases 325 kJ. 1359.8 kJ energy is this in calories.

An exothermic reaction is a chemical reaction that releases heat energy into the surroundings. During an exothermic reaction, the products of the reaction have less potential energy than the reactants, and the excess energy is released in the form of heat.

One calorie is defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius.

One joule is defined as the amount of energy required to apply a force of one newton over a distance of one meter.

1 cal = 4.184 J

1 cal = 0.004184 kJ

325000 cal = x kJ

0.004184/ 1 = x / 325000

x = 1359.8 kJ

Thus, 1359.8 kJ energy is this in calories.

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Complete Question  

Complete Question is attached below

Answer:

Option A

\(D=A\) And \(C>A\)

Explanation:

From the question, we are told that:

The Chemical Reaction

 \(2A_{aq}+B_{aq} \leftrightarrow 3C_{aq}+2D_{aq}\)

Generally, the equation for Equilibrium constant is mathematically given by

 \(K=\frac{C^c*D^d}{A^a*B^b}\)

Therefore

 \(K=\frac{C^3*D^d}{A^2*B^b}\)

Hence we conculde

 \(D=A\) And \(C>A\)

Therefore Option A

The lethal dose and how ounces of soda in a can of soda is not given, however, the standard lethal dose and volume of soda are given as below:

Lethal dose: 10 gm of caffeine

The volume of soda per can =  12oz/can

Answer:

The correct answer is - 324.254 cans or round up to 325 cans. Ans.

Explanation:

Given:

2.57 mg caffeine / 1oz

12oz / 1can

Lethal dose: 10.0g or 10,000mg of caffeine

Solution:

Caffeine per soda can = (2.57 mg caffeine / 1oz) * (12oz / 1can) = 30.84 mg caffeine / 1can.

lethal dose would be in =

(10,000mg caffeine) * (1can / 30.84 mg caffeine) = 324.254 cans or round up to 325 cans. Ans.

Answer:

I'm pretty sure They will exhibit high conductivity, ductility, and malleability because of their atomic structure.

Explanation:

I'm not 100 percent sure

Answer:

ion is missing

Explanation: