Element Names and Symbols Atoms, Molecules and lons 1. Write the element symbol for each element name. Listed below are the first 36 clements from the Periodic
Table and a handful of other common elements (eg, the rest of the noble gases, halogens, alkali metals, and
alime earth metals and a few other common elements)

What three natural resources are found in the great lakes region

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.)

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.