Principles Of Chemistry Exam 3 Practice Problems Chapter 5 8 9 10

Exam 3 Practice Set (Chapters 5, 8, 9, 10) KEY CHGN121 *Disclaimer: This is NOT a comprehensive or representative set of questions - just old exam questions pertaining to the current material for extra practice. Please only use these AFTER completing your homework, reading and studying lecture notes to prepare for the exam. We do NOT have time to double-check the accuracy of the answer keys as carefully as a real homework or exam, so it is up to you to look up anything suspicious notify us of any suspected typos here! 1) True or False. In a flask containing 2.00 mol of He, 3.00 mol of Ne, and 5.00 mol of Ar at STP, the partial pressure of He is 152 mm Hg. 2 mol He/10 mol total = 0.2 = XHe 1 atm = 760 mmHg 0.2 x 760 mmHg = 152 mmHg for He. 2) True or False. One mole of gas at 25 C has a larger volume than one mole of gas at standard temperature. V1/T1 = V2/T2. 1L/298K = X/273K X = 0.916L. Volume and Temp are directly related, less T equals less volume. 3) True or False. If the number of moles of