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Lera25 [3.4K]
3 years ago
5

Which property of gases allows them to be stored at high concentrations in a bottle of air freshener? What changes occur at the

molecular level when ice cream melts and forms a liquid? “Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules.” Which state of matter is defined by this description?
Chemistry
2 answers:
Crank3 years ago
7 0

 

The property of gases that allows them to be stored at high concentrations in a bottle of air freshener is its high compressibility due to the large distance between the molecules in the gas phase. The changes that occur at the molecular level when ice cream melts and forms a liquid is the physical change form solid to liquid phase.

The statement that is defined in “Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules.” Is the gaseous phase. 

tatiyna3 years ago
4 0

Answer 1) The property of gases called as "Compressibility" allows the gases to be pressurized and stored in containers. The compressibility of a substance (in gaseous state) can be defined as the change in volume (per unit volume) per unit change in pressure. They contain high concentration with high pressure in the bottle of air freshener.

Answer 2) The changes that usually observed when the ice-cream starts to melt and form liquid at the molecular level is that; the molecules in the compound come closer to each other.

As the ice present inside starts to melt, the orderly arrangement gets disturbed and collapses. The water molecules trapped inside starts to move and pass each other which actually brings them closer together as liquid water. Here, the energy is transferred to the water molecules in the ice, and the motion of the molecules increases.

Answer 3) Gaseous State

Explanation : "Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules." This statement can be true only for the gaseous state molecules. As solid would have compact arrangement of the molecules in their structure, whereas liquids will have loosely bonded molecules in structure. Gaseous state molecules are the only molecules which are least densely packed and has no forces of attraction.

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4 0
3 years ago
At room temperature (208C) and pressure, the density of air is 1.189 g/L. An object will float in air if its density is less tha
Ugo [173]

Total density of filled ball with nitrogen gas: \frac{0.12G+0.6524g}{0.560L} = 1.3792g/L

The relationship between mass and volume can be easily determined using density; for example, the mass of a body is equal to its volume multiplied by the density (M = Vd), whereas the volume is equal to the mass divided by the density (V = M/d). The ball filled with nitrogen will not float in the air because total density of filled ball is greater than the density of an air. Density of the evacuated ball D = 0.214 g/L

Density of nitrogen gas = d_4=1.165g/L

Mass of the nitrogen gas : 1.165g/L \times 0.560L = 0.6524g

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4 0
2 years ago
hydrogen decomposes quickly when exposed to light. the reaction for decomposing hydrogen peroxide is:
Svet_ta [14]

The decomposition reaction for hydrogen peroxide is given below:

                                     2H_{2} O_{2} → 2H_{2} O + O_{2}

This is a decomposition reaction.

Reactions in which a reactant breaks into two or more products are known as Decomposition reactions.

                                          AB → A + B

here, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction

The decomposition reaction of decomposing hydrogen peroxide is exothermic. When the hydrogen peroxide undergoes a decomposition reaction, heat is also released along with water and oxygen.

Hence the  reaction for decomposing hydrogen peroxide is :

         2H_{2} O_{2} → 2H_{2} O + O_{2}

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5 0
1 year ago
A solution contains 15.27 grams of NaCl in 0.670 kg water at 25 °C. What is the vapor pressure of the solution?
Anvisha [2.4K]

Answer:

The vapor pressure of the solution is 23.636 torr

Explanation:

P_{solution} = X_{solvent}*P_{solvent}

Where;

P_{solution is the vapor pressure of the solution

X_{solvent is the mole fraction of the solvent

P_{solvent is the vapor pressure of the pure solvent

Thus,

15.27 g of NaCl = [(15.27)/(58.5)]moles = 0.261 moles of NaCl

0.67 kg of water =  [(0.67*1000)/(18)]moles = 37.222 moles of H₂O

Mole fraction of solvent (water) = (number of moles of water)/(total number of moles present in solution)

Mole fraction of solvent (water) = (37.222)/(37.222+0.261)

Mole fraction of solvent (water) = 0.993

<u>Note:</u> the vapor pressure of water at 25°C is 0.0313 atm

Therefore, the vapor pressure of the solution = 0.993 * 0.0313 atm

the vapor pressure of the solution = 0.0311 atm = 23.636 torr

5 0
3 years ago
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Atomic mass / mass number / atomic weight

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2 years ago
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