The purity of a sample containing zinc as well as weighing 0.198 g is determined by measuring the amount of hydrogen formed while the sample reacts with an excess of hydrochloric acid. The determination illustrates the sample to be 84.0% zinc. Explain what amount of hydrogen measured at STP was obtained
A. 0.152 L
B. 0.0330 g
C. 3.42 x 10-3 mole
D. 1.53 x 1021 molecules
E. 1.53 x 1021 atoms
Explain an alkenes with formula C6H14 can be prepared by reduction (with Zn and H+) of only two different alkyl chlorides (C6H13Cl) as well as by hydrogenation (with H2/Pt) of only two different alkenes (C6H12). Give condensed structures for the alkenes, the two alkyl chlorides and the two alkenes.