Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce ammonia. N,(g) + 3H,(g) 2 NH, (g) Assume 0.120 mol N, and 0.378 mol H, are present initially. After complete reaction, how many moles of ammonia are produced? NH,: mol How many moles of H, remain?

Which of the conformations in the attachment has ONLY STERIC strain?

CH3 CH3 H3C H3C CO2H

Name the following:                  H  CH3 H   H            H – C – C – C – C – C – H                   H   H   H  CH2 H                                   CH3