Exam 1 Solutions 2 Chemistry 301

This study source was downloaded by 100000802832151 from CourseHero.com on 11-01-2022 09:20:18 GMT -05:00https://www.coursehero.com/file/9122338/Exam-1-solutions-2-CH301/ Version 153 - Exam 1 - mccord - (52115) 1This print-out should have 26 questions. Multiple-choice questions may continue on the next column or page - nd all choicesbefore answering.mccord - ch301 Exam 1 Noble As7-9pm Sept 17, 2013001-150 in WEL 1.308151-300 in WCH 1.12012pm class only - 52115001 4.0 pointsCalculate the pressure of 4 g of nitrogen gas in a 1 L container at 20.0 C.1. 0.469 atm2. 3.44 atm correct3. 6.87 atm4. 96.2 atm5. 0.235 atmExplanation:m = 4 g V= 1 LT = 20 C + 273.15 = 293.15 KFor the nitrogen,n= (4 g N2) 1 mol N228.0134 g N2= 0 .142789 mol N2P V =n R TP = n R TV= (0.142789 mol N2) 0 .08206 Latmmol K 1 L (293 .15 K)= 3 .43491 atm002 4.0 pointsThe density of a gas is 1.96 g/L at STP. What would the mass of 2.00 moles of the gas be atSTP?1. There is not enough information tosolve.2. 43.9 g3. 0.510 g4. 87.8 g correct5. 44.8 g6. 0.0875 gExplanation:d = 1 .96 g /L P= 1 atmT = 0 C = 273 K R= 0 .0821