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2 years ago

What is true of a sample of gas as temperature is increased? (3 points)

Chemistry

1 answer:

marissa [1.9K]2 years ago

6 0

As temperature increases, the average kinetic energy of a sample of gas molecules decreases.

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What is the pressure of a sample of gas at a volume of .335 L if it occupies 1700 mL at

Alchen [17]

Answer:

4,313.43 mmHg is the pressure of a sample of gas at a volume of .335 L if it occupies 1700 mL at 850 mm Hg

Explanation:

Boyle's law says:

"The volume occupied by a given gas mass at constant temperature is inversely proportional to the pressure." This means that if the quantity of gas and the temperature remain constant, the product of the pressure for the volume always has the same value.

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

o P * V = k

If you have a certain volume of gas V1 that is at a pressure P1 at the beginning of the experiment and you vary the volume of gas to a new value V2, then the pressure will change to P2, it will be true:

P1 * V1 = P2 * V2

In this case:

V1=0.335 L
P1= ?
V2= 1700 mL= 1.7 L (Being 1 L=1000 mL)
P2= 850 mmHg

Replacing:

P1*0.335 L=850 mmHg*1.7 L

Solving:

$P1=\frac{850 mmHg*1.7 L}{0.335 L}$

P1=4,313.43 mmHg

4,313.43 mmHg is the pressure of a sample of gas at a volume of .335 L if it occupies 1700 mL at 850 mm Hg

5 0

3 years ago

Identify the neutralization reaction

KIM [24]

In chemistry, neutralization or neutralisation (see spelling differences) is a chemical reaction in which an acid and a base react quantitatively with each other. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.

5 0

3 years ago

A gas has an initial volume of 15 L. If the temperature increases from 330 K to 450 K, what is the new volume.

Artist 52 [7]

Answer:

20.(45)L or about 20.4545L

Explanation:

PV = nRT

Where:

P - pressure

V - volume

n - number of particle moles

R - a constant

T - temperature in K

We can assume the P and n (and definitely R) stay the same, so we infer that

$V_1 = \frac{nRT_1}{P} = 15L\\V_2 = \frac{nRT_2}{P}\\V_1 / V_2 = \frac{nRT_1}{P} / \frac{nRT_2}{P} = \frac{T_1}{T_2}\\\\15L / V_2 = \frac{330K}{450K} = \frac{11}{15}\\\\V_2 = 15L \cdot \frac{15}{11} = 20.(45)L$

4 0

3 years ago

Our skies are blue because of what kind of light? (for my science class pls help- :<)

iren2701 [21]

Answer:

"Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time."

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3 years ago

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Noble gas notation for molybdenum?

GuDViN [60]

Noble gas notation for molybdenum:
[Kr] 4d^5 5s^1

4 0

3 years ago