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MrMuchimi
3 years ago
9

A calorimeter contains 251 g of water at 24.3 C.The temperature of the water decreases to 18.5 C when 12.5 g of potassium nitrat

e is dissolved in water. Is dissolving potassium nitrate in water endothermic or exothermic
Chemistry
1 answer:
vova2212 [387]3 years ago
8 0

Answer:

Endothermic  

Explanation:

The temperature of the water decreased.

The water lost heat.

The heat must have gone into getting the KNO₃ into solution.

So, the dissolving of KNO₃ in water is endothermic.

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c - concentration of the reactant remaining at time.

t = 29,2 s.<span>
First calculate the rate constant k:
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