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professor190 [17]
3 years ago
9

Help please I have 10 min.

Chemistry
1 answer:
Dominik [7]3 years ago
4 0

Answer:

i cant see the question. i can try to help if you tell me the question.

Explanation:

also how do i use the comments???

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0.65 moles of O2 originally at 85°C is cooled
soldier1979 [14.2K]

Answer:

2.09 atm

Explanation:

We can solve this problem by using the equation of state for an ideal gas, which relates the pressure, the volume and the temperature of an ideal gas:

pV=nRT

where

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V is its volume

n is the number of moles

R is the gas constant

T is the absolute temperature

In this problem we have:

n = 0.65 mol is the number of moles of the gas

V = 8.0 L is the final volume of the gas

T=40C+273=313 K is the temperature of the gas

R=0.082 atm L mol^{-1} K^{-1} is the gas constant

Solving for p, we find the final pressure of the gas:

p=\frac{nRT}{V}=\frac{(0.65)(0.082)(313)}{8.0}=2.09 atm

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How does energy change form when friction causes the temperature of an object to increase?
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I believe the answer would be through the movement of the molecules, the higher the temperature the more the molecules move around and vibrate.
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