Which property of the atom above allows it to form large complex molecules with many other atoms
of the same element and other elements?
a.
the six protons in the nucleus allow the atom to bond with six other atoms.
the two energy levels allow the atom to bond with atoms at multiple energy levels.
the six total electrons allow the atom to bond with six other atoms.
the four valence electrons allow the atom to bond with four other atoms.
c.
d.

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.)