CHEM 1A Lecture Notes - Lecture 12: Ideal Gas Law, Molar Mass, Isopropyl Alcohol

• School: UCSB
• Department: Chemistry and Biochemistry
• Course: CHEM 1A
• Professor: BERNT C M

Document Summary

Exam1: average 66% check back the answer key and make sure you know how to do each question, as they may be on the final exam. Take the self-assessment on gauchospace if you want 5 extra points toward midterm exam! 11 gas 14 gases (increase in n) Determine the molar mass of the gas: Think about the units given and the units of what is desired. We are given g per l, so we just need to convert l to mol. = 1. 5 atm x 1 l /(0. 08206 l*atm*mol -1 *k -1 x 280k) So, 1 l of this gas is 0. 0653 mol (cid:1178) Gas stoichiometry: always balance the equation first, convert everything into moles, use mole ratio from the balanced equation to find the moles of what"s asked for, convert the mole into desired unit. Ca(s) + 2 hcl (aq) h 2 (g) + cacl 2 (s)