Alkanes, alkenes, and alkynes In the space below, diagram and label three molecules:

1. Propane

2. Propene

3. Propyne

Use simple Lewis structures (two-dimensional stick figures) such as the one below.

Figure 1: Example of a Lewis structure (stick-figure) diagram

(Hint: Double bonds are represented with two parallel lines (e. g. C=C); triple bonds with three (e. g. C≡C)) PLEASE HELP ILL GIVE 100 POINTS NO GAMES RIGHT ANWSER ONLY

The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures