PV = nRT: The Ideal Gas Law

Use the ideal gas law to find moles, pressure, and volume, work at STP, and calculate gas densities

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Views #: 117
Questions #: 7
Time: 10 minutes
Pass Score: 80.0%
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The Ideal Gas Law

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Which equation is the ideal gas law?

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Solve for Moles

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A gas sample has a volume of 3.91 L, a temperature of 305 K, and a pressure of 2.09 atm. How many moles are present?

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Solve for Pressure

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A 0.0555 mol sample of Kr has a temperature of 188°C and a volume of 0.577 L. What pressure does it have?

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Volume at STP

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What is the volume of 17.88 mol of Ar at STP?

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Gas Stoichiometry at STP

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How many liters of CO₂, at STP, are produced from 100.0 g of C₈H₁₈? 2C₈H₁₈(ℓ) + 25O₂(g) → 16CO₂(g) + 18H₂O(ℓ)

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Gas Densities at STP

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Gas

He
Kr
Ar
Ne

Density at STP (g/L)

0.901
0.179
3.74
1.78

Match each gas to its density at STP.

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Density Away from STP

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What is the density of SF₆ at 335 K and 788 torr?

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Explanation

✕
0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
Keywords
Year 11