Name:

SCH$3$U

$6.$ What is the mass percent of nitrogen in barium nitrate?

$7.$ How many molecules of sulfur would be needed to react with $225$ atoms of copper to form copper$($I$)$ sulfide in the following reaction? $16Cu(s)+S_8(s)8C{u}_2{S}_{(s)}$

$8.$ Define the term solution.

$9.$ What is the net ionic equation for the reaction of hydrochloric acid with sodium hydroxide?

$10.$ Which contains the higher concentration of chloride ions: $0\mathrm{.}342mo\frac{l}{L}$ sodium chloride $(NaCl),$ or $0\mathrm{.}242mo\frac{l}{L}$ aluminum chloride $(AlC{l}_3)?$

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