Consider the following equilibrium between \( \mathrm{N}_{2} \mathrm{O}_{4} \) and \( \mathrm{NO}_{2} \). Which changes would cause the reaction to become darker brown? Riew Available Hint(s) Run the reaction at a higher temperature.

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

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

Consider the reaction represented \( \mathrm{byCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{Cl}^{-} \xrightarrow{\text { i. Explain why the reaction is a redox reaction. }} \quad \mathrm{Cr}^{3+}+\mathrm{Cl}_{2} \) iii. Balance the redox equation State five physical properties of metals

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

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