307065 The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is

307066 If \({\rm{5\;g}}\;{{\rm{H}}_{\rm{2}}}\) is mixed with 14 g of \({\mathrm{\mathrm{N}_{2}}}\) for the following reaction:
\({\mathrm{\mathrm{N}_{2}+3 \mathrm{H}_{2} \longrightarrow 2 \mathrm{NH}_{3}}}\)
At the end, mass of \({\mathrm{\mathrm{H}_{2}}}\) left unreacted is ____ g.

307067 The set of numerical coefficients that balances the equation
\({{\rm{K}}_{\rm{2}}}{\rm{Cr}}{{\rm{O}}_{\rm{4}}}{\rm{ + HCl}} \to {{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + KCl + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) is

307045 \(\begin{array}{l}
\begin{array}{*{20}{l}}
{{{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + }}\,{\rm{x}}\,{\rm{KCl}}\,{\rm{ + }}\,{\rm{6}}{\mkern 1mu} {{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}} \to }\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y}}\,{\rm{Cr}}{{\rm{O}}_{\rm{2}}}{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{ + 6}}{\mkern 1mu} {\rm{KHS}}{{\rm{O}}_{\rm{4}}}{\rm{ + }}\,{\rm{z}}{{\rm{H}}_{\rm{2}}}{\rm{O}}{\mkern 1mu} }
\end{array}\\

\end{array}\)
x ,y and z are respectively

307065 The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is

307066 If \({\rm{5\;g}}\;{{\rm{H}}_{\rm{2}}}\) is mixed with 14 g of \({\mathrm{\mathrm{N}_{2}}}\) for the following reaction:
\({\mathrm{\mathrm{N}_{2}+3 \mathrm{H}_{2} \longrightarrow 2 \mathrm{NH}_{3}}}\)
At the end, mass of \({\mathrm{\mathrm{H}_{2}}}\) left unreacted is ____ g.

307067 The set of numerical coefficients that balances the equation
\({{\rm{K}}_{\rm{2}}}{\rm{Cr}}{{\rm{O}}_{\rm{4}}}{\rm{ + HCl}} \to {{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + KCl + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) is

307045 \(\begin{array}{l}
\begin{array}{*{20}{l}}
{{{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + }}\,{\rm{x}}\,{\rm{KCl}}\,{\rm{ + }}\,{\rm{6}}{\mkern 1mu} {{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}} \to }\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y}}\,{\rm{Cr}}{{\rm{O}}_{\rm{2}}}{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{ + 6}}{\mkern 1mu} {\rm{KHS}}{{\rm{O}}_{\rm{4}}}{\rm{ + }}\,{\rm{z}}{{\rm{H}}_{\rm{2}}}{\rm{O}}{\mkern 1mu} }
\end{array}\\

\end{array}\)
x ,y and z are respectively

307065 The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is

307066 If \({\rm{5\;g}}\;{{\rm{H}}_{\rm{2}}}\) is mixed with 14 g of \({\mathrm{\mathrm{N}_{2}}}\) for the following reaction:
\({\mathrm{\mathrm{N}_{2}+3 \mathrm{H}_{2} \longrightarrow 2 \mathrm{NH}_{3}}}\)
At the end, mass of \({\mathrm{\mathrm{H}_{2}}}\) left unreacted is ____ g.

307067 The set of numerical coefficients that balances the equation
\({{\rm{K}}_{\rm{2}}}{\rm{Cr}}{{\rm{O}}_{\rm{4}}}{\rm{ + HCl}} \to {{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + KCl + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) is

307045 \(\begin{array}{l}
\begin{array}{*{20}{l}}
{{{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + }}\,{\rm{x}}\,{\rm{KCl}}\,{\rm{ + }}\,{\rm{6}}{\mkern 1mu} {{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}} \to }\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y}}\,{\rm{Cr}}{{\rm{O}}_{\rm{2}}}{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{ + 6}}{\mkern 1mu} {\rm{KHS}}{{\rm{O}}_{\rm{4}}}{\rm{ + }}\,{\rm{z}}{{\rm{H}}_{\rm{2}}}{\rm{O}}{\mkern 1mu} }
\end{array}\\

\end{array}\)
x ,y and z are respectively

307065 The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is

307066 If \({\rm{5\;g}}\;{{\rm{H}}_{\rm{2}}}\) is mixed with 14 g of \({\mathrm{\mathrm{N}_{2}}}\) for the following reaction:
\({\mathrm{\mathrm{N}_{2}+3 \mathrm{H}_{2} \longrightarrow 2 \mathrm{NH}_{3}}}\)
At the end, mass of \({\mathrm{\mathrm{H}_{2}}}\) left unreacted is ____ g.

307067 The set of numerical coefficients that balances the equation
\({{\rm{K}}_{\rm{2}}}{\rm{Cr}}{{\rm{O}}_{\rm{4}}}{\rm{ + HCl}} \to {{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + KCl + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) is

307045 \(\begin{array}{l}
\begin{array}{*{20}{l}}
{{{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}{\rm{ + }}\,{\rm{x}}\,{\rm{KCl}}\,{\rm{ + }}\,{\rm{6}}{\mkern 1mu} {{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}} \to }\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y}}\,{\rm{Cr}}{{\rm{O}}_{\rm{2}}}{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{ + 6}}{\mkern 1mu} {\rm{KHS}}{{\rm{O}}_{\rm{4}}}{\rm{ + }}\,{\rm{z}}{{\rm{H}}_{\rm{2}}}{\rm{O}}{\mkern 1mu} }
\end{array}\\

\end{array}\)
x ,y and z are respectively