Question

Mole-Volume Conversions 1. Determine the volume, in liters, occupied by 0.030 moles of a gas at STP. 2. How many moles of argon atoms are present in 11.2 L of argon gas at STE 3. What is the volume of 0.80 mol of neon gas at STP? 4. What is the volume of 2.3 moles of water vapor at STP? Mixed Mole Conversions 1. How many oxygen molecules are in 3.36 L of oxygen gas at STP? 2. Find the mass in grams of 2.213 x 1023 molecules of F2. 3. Determine the volume in liters occupied by 12.2 g of nitrogen gas at STP.

Answer 1

Date Solution o Imole of gas occupies 22.4L at STP 0030 moles will occupy 22.4 x 0.03 0.6722 22-4L OF : 11. 2l of AX will have I mole Ar will have I 01-22) 224 120.5 moles Imole of We & 224 L at STP 0.8 mole we = 22.4x 0.8 - 17.92 L at STP. 4 Imole of water vapour = 22.4 L at STP 23 moles of water vapour = 22.4 x 2 3 151522 0 22.4L of oxygen i . 3 36 L of oxygen: 6:02x 1023 molecules 6:02 x 10 23 336 0903 X 1023 9:03 81022 molecules

Date 6 602X 1023 molecules of F2 = 38g : 2.213 x 1023 mole unles of F2 = 38 x 2.213 x 10 23 16:02 x 1023 2.72 ② 1289 W = 22.4L at STP - 22.4 12.2 a 19.762 28