What will happen to the rates of the forward and reverse reactions when a catalyst is added? View Available Hint(s) Forward rate increases; reverse rate decreases. Both forward and reverse rates increase. Both forward and reverse rates decrease. Forward rate decreases; reverse rate increases.

Balance the following chemical equation (if necessary): \( \mathrm{MnO}_{2}(\mathrm{~s})+\mathrm{HCl}(\mathrm{aq}) \rightarrow \mathrm{MnCl}_{2}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{Cl}_{2}(\mathrm{~g}) \)

Which of the following processes is nost suitable for extracting sodium chloride from sea water? A. electrolysis B. crystallisation C. simple distillation O. fractional distillation

\( 2 LiOH ( s ) \rightarrow Li 2 O ( s ) + H 2 O ( l ) \)

How many oxygen atoms are located on the reactant side of the following chemical equation? \( \mathrm{C}_{3} \mathrm{H}_{8}(\mathrm{~g})+5 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 3 \mathrm{CO}_{2}(\mathrm{~g})+4 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \)

Укажите для окислительно-восстановительной реакции \( \mathrm{Na} 2 \mathrm{~S} 2 \mathrm{O} 3+\mathrm{H} 2 \mathrm{O} 2=\mathrm{Na} 2 \mathrm{SO} 04+\mathrm{H} 2 \mathrm{SO} 04+\mathrm{H} 2 \mathrm{O} \) сумму коэффициентов в уравнении и атомную массу окислителя. Ответ записать в последовательности через запятую без интервалов