3. How many grams of solid magnesium nitrate (148. 3 g/mol) should be added to 500 ml of 0. 118 m of sodium nitrate in order to produce an aqueous 0. 25 m solution of nitrate ions?.

The answer would be true

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

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