Two molecules, of similar molar mass, are given below with their boiling points. Briefly, in one or two sentences, clearly explain why methanol has a much higher boiling point than ethane. Ethane Boiling Point: -89°C HH Methanol Boiling Point: 64.7°C H- C- C- H IOI O: HH HH *Clearly state the attractive forces each compound can make in pure substance and explain how that relates to their relative boiling points. Credit will be given if your answer is written in complete sentences, and is clearly and completely answered. HTML Editora BIYA-A- IEE311x 3. NV @ VOIT 12pt Paragraph - O words

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)