Use molar volume to calculate each of the following at STP. a. the number of mol

Question

Use molar volume to calculate each of the following at STP. a. the number of moles of O_2 in 44.8 L of O_2 gas b. the volume, in liters, occupied by 0.420 mole of He gas Use molar volume to calculate each of the following at STP: a. the volume, in liters, occupied by 2.50 moles of N_2 gas b. the number of moles of CO_2 in 4.00 L of CO_2 gas Use molar volume to the gas calculate each of the following at. STP: a. the volume, in liters, of 6.40 g of O_2 gas b. the number of grams of H_2 in 1620 mL of H_2 gas Use molar volume to calculate each of the following at STP: a. the number of grams of Ne contained in 11.2 L of Ne gas b. the volume, in liters, occupied by 50.0

Explanation / Answer

Answer:

8.41:

a. At STP, one mole of gas has a volume of 22.4 liters. Given that there are 44.8 liters in this problem, which is twice as much as 22.4, there must be 2.00 moles of oxygen gas.

Moles of oxygen =44.8 / 22.4 = 2

b. One mole of any GAS at STP would have a volume of 22.4 liters.

Helium gas is a gas at STP.

So, the volume of 0.420 moles of He at STP = 22.4 x 0.420 = 9.408 litres.

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