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Aleks [24]
3 years ago
7

Which statement below describes the behavior of a Molecules when a substance changes from a gas to liquid

Chemistry
1 answer:
krek1111 [17]3 years ago
7 0

Answer:

As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.

Explanation:

hopfully this helps!

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A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘ C . How many grams of this gasoline would fill a 12.8 gal tan
In-s [12.5K]
To answer this question, you need to know how to convert milliliters into liter then into a gallon. In this question, you are given the gasoline density (0.737g/ml) and the volume (12.8gallon). The information is enough to determine the gas weight. The calculation would be:

Gas weight= density * volume
Gas weight= 0.737g/ml * 12.8 gal * 3.78L/gal * 1000ml/L= 35659.008 grams
6 0
4 years ago
What is a chemical compound and how is it used?
horrorfan [7]
Chemical Compound- a chemical substance consisting of 2 or more different chemically bounded chemical elements with a fixed ratio determining the composition. It is commonly used for electricty

6 0
3 years ago
1. A student has a petri dish packed with a layer of marbles. Which of the following activities should the student perform to de
Sindrei [870]

Answer: A.) Removing a few marbles from the petri dish and stirring the rest around as energy is added

B) The high temperature makes the gas molecules spread apart according to Charles's law because this law describes how a gas will behave at constant pressure.

Explanation: The phase transition from solid to liquid involves the use of energy to make the molecules present in solid to break the inter molecular forces and to start moving away from each other as in liquid. The molecules in solid are closely packed whereas in liquids they are loosely packed. Thus less number of molecules are present per unit volume in a liquid. Thus the marbles have to be removed to show less density and the energy has to supplied. Removing all but two marbles from the petri dish and shaking them vigorously as energy is added will give us a more disorderd state called gas in which the molecules are very far apart and the density is least.

B) According to Boyle's law the pressure is inversely proportional to the volume of the gas at constant temperature and constant number of moles. P\propto \frac{1}{V}     (At constant temperature and number of moles)

According to Charle's law the volume is directly proportional to the temperature of the gas at constant pressure and constant number of moles.

V\propto T    (At constant pressure and number of moles)

Thus as temperature of the gas increases , the volume also increases, and the density decreases. the gas becomes lighter and thus rises up.

7 0
3 years ago
How is a Mixture different from a Compound<br> 30 points
barxatty [35]

Answer:

A substance that is comprised of more than one kind of atom reinforced together. Blend: A mix of at least two components or mixes that have not responded to bond together; each part in the combination holds its own properties.

Explanation:

3 0
3 years ago
Read 2 more answers
Container A holds 717 mL of an ideal gas at 2.80 atm. Container B holds 174 mL of a different ideal gas at 4.30 atm. Container A
horsena [70]

Answer:

3.09 atm

Explanation:

Given that:

Volume of container A = 717 mL

Pressure of container A = 2.80 atm

Volume of container B = 174 mL

Pressure of container B = 4.30 atm

Now, if the valve are being removed and the gases are allowed to mix together; then

The total final pressure can be calculated by using the formula:

P_f = \dfrac{P_AVA+P_BV_B}{V_A+V_B}

P_f = \dfrac{2.80*717+4.30*174}{717+174}

P_f = \dfrac{2007.6+748.2}{891}

P_f = \dfrac{2755.8}{891}

\mathbf{P_f =3.09 \ atm}

4 0
3 years ago
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