If the reaction is at equilibrium, what direction will the reaction shift if \( \mathrm{NH}_{3} \) gas is added? View Available Hint(s) The reaction will shift to produce both reactants and products. The reaction will shift to produce products. The reaction will remain unchanged. The reaction will shift to produce reactants.

Сила тока, которую необходимо поддержать для получения 16,2 г серебра путём электролиза раствора нитрата серебра за 30 минут, составляет__ А (выход по току 100 \( \%, F=96500 \mathrm{Kл} / \) моль)

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

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

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

Balance the following chemical equation (if necessary): \[ \mathrm{Ca}(\mathrm{s})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow \mathrm{CaO} \text { (s) } \]