A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 3.80 kg of water at \( 24.9{ }^{\circ} \mathrm{C} \). During the reaction \( 127 . \mathrm{kJ} \) of heat flows out of the bath and into the flask. Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is \( 4.18 \mathrm{~J} \cdot \mathrm{~g}{ }^{-1} \cdot \mathrm{~K}^{-1} \). Round your answer to 3 significant digits.

Значение ЭДС гальванического элемента, состоящего из ртутного и кадмиевого электродов при стандартных условиях равно_B ( \( \left(^{0} \mathrm{Mg}^{2+} / \mathrm{Mg}=-2,38 \mathrm{~B}, \mathrm{E}^{0} \mathrm{Cu}^{2+} / \mathrm{Cu}=0,34 \mathrm{~B}\right) \).

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

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

What is another name for Group 8A?A. Group 18AB. Group 8C. Group 8BD. Group 18

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