🤓 Based on our data, we think this question is relevant for Professor de Laat's class at University of Guelph.
We’re being asked to calculate the amount of energy released by freezing 42.5 g of water.
Recall that during a phase transition, the temperature is constant.
Also note that freezing is an exothermic process, which means q is negative (–).
The amount of energy (q) needed to freeze a given mass is calculated using:
m = mass (in g)
ΔHfreezing = heat of freezing (in J/g) *ΔHfreezing = – ΔHfusion
How much energy is released when 42.5 g of water freezes?
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Our tutors have indicated that to solve this problem you will need to apply the Heating and Cooling Curves concept. You can view video lessons to learn Heating and Cooling Curves. Or if you need more Heating and Cooling Curves practice, you can also practice Heating and Cooling Curves practice problems.
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Based on our data, we think this problem is relevant for Professor de Laat's class at University of Guelph.