Question

A sample of **helium** gas collected at a pressure
of **0.755** atm and a temperature of
**281** K is found to occupy a volume of
**845** milliliters. How many moles of
**He** gas are in the sample?

Answer #1

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A sample of hydrogen gas collected at a pressure of 0.544 atm
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1.A helium-filled weather balloon has a volume of
811 L at 23 °C and
750 mm Hg. It is released and rises to an altitude
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281 mm Hg and the temperature is
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If it is desired to decrease the volume of the...

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Charles's Law
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A sample of oxygen gas at a pressure of 960 mm Hg and
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25.5 moles of helium gas is at 10 0C and gauge pressure of
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c) the mass of the helium gas.

If an ideal gas has a pressure of 8.15 atm, a temperature of
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A sample of argon gas has a volume of 735 mL at a pressure of
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temperature of the gas sample are changed to the following, if the
amount of gas does not change?
A. 658 mmHg and 281 K
B. 0.55 atm and 75 degrees Celsius
C. 15.4 atm and -15 degrees Celsius

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B) What is the pressure of the gas in atm when the volume and
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1. A sample of gas with an initial volume of 28.2 L at a
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Express your answer using three significant figures.
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