For the reaction:

$C{S}_2+$dotsdotsdotsdots..$N{H}_3,H_{2}S$

$+$dots...............$N{H}_{4}SCN$

a$)$ Balance the reaction.

b$)$ How many grams of $H_{2}S$ may be produced from $0\mathrm{.}0365g$ of $C{S}_2?$

c$)$ What is the percent yield if only $0\mathrm{.}0061g$ were obtained?

$3.$ For the reaction:

$F{e}_2{S}_2+$dotsdotsdotsdots.$HCl$dotsdotsdotsdots

$FeC{l}_3+$

$H_{2}S$

a$)$ Balance the reaction.

b$)$ How many grams of $FeC{l}_3$ may be produced when $26\mathrm{.}0g$ of $H_{2}S$ are produced?

c$)$ What is the percent yield if only $26\mathrm{.}4g$ were obtained?

$4.$ For the reaction:

$F{e}_2{O}_3(s)+2Al(s)2Fe(l)+A{l}_2{O}_3($s$)$

a$)$ What mass of iron$($III$)$ oxide and aluminum must be used to produce $25\mathrm{.}0g$ of iron?

b$)$ What is the mass of $A{l}_2{O}_3$ that would be produced?