Ideal gas

A 10.3 L cylinder contains 756.2 grams of Cl₂ at 21.2 ^oC. How many grams of chlorine must be released to reduce the pressure to 22.4 atm assuming ideal gas behavior? (Atomic weight: Cl = 35.45).

• 69.5

• 21.2

• 79.0

• 44.2

• 15.2

A 25 L cylinder contains 128 g of nitrogen gas at 10^oC. How many grams of nitrogen must be added to increase the pressure to 5.00 atm assuming ideal gas behavior? (Atomic weight: N = 14.01).

• 22.7

• 12.5

• 25.4

• 18.9

• 25.9

A 162 L drum used for crude oil is steam cleaned. Assuming ideal gas behavior, calculate the number of moles of water required to fill the barrel at 1.00 atm if the steam is at 110^oC. (Atomic weights: H = 1.008, O = 16.00).

• 4.75

• 7.23

• 5.15

• 4.22

• 6.42

Calculate the density, g/L, of Freon-12, CF₂Cl₂ at STP. (Atomic weights: C = 12.01, F = 19.00, Cl = 35.45).

• 4.98

• 3.80

• 5.39

• 6.14

• 4.35

he density of a gaseous element at 310 ^oC and 775 mm Hg is 2.64 g/L. What is the molecular weight of the element?

• 124

• 84

• 114

• 93

• 106