Part A You may want to reference Pages 273 276 Section 86 w

Part A You may want to reference (Pages 273 - 276) Section 8.6 while completing this problem. Calculate the number of moles of CO2 in 3.70 L of CO2 gas. Express your answer to three significant figures and include the appropriate units. Use the molar volume to calculate each of the following at STP ValueUnits Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Enter your answer using dimensions of amount of substance.

Solution

part A) at STP

22.4 L = 1.0 moles

3.70 L = 3.70 x 1 / 22.4 = 0.165 moles

moles of CO2 = 0.165

part B ) 1.0 moles He = 22.4 L

0.700 moles = 0.700 x 22.4 / 1 = 12.7 L

answer = 12.7 L He

part C) O2 = 32.0 g /mol

32 g O2 = 22.4 L O2

2.20 g O2 = 2.20 x 22.4 / 32 = 1.54 L

answer = 1.54 L O2

part D) Ne = 20.18 g /mol

22.4 L =20.18 g

42.6 L = 42.6 x 20.18 / 22.4 = 38.4 g

answer = 38.4 g Ne