Question

How much heat is released when 245 g of steam cools from 106.0°C to -4.5°C

Answer 1

The amount of heat released is -54, 957.175J

Step-by-step explanation

Given that;

`\begin{gathered} \text{ The mass of the steam is 245g} \\ \text{ The final temperature of the steam is -4.5}\degree C \\ \text{ The initial temperature of the steam is 106.0}\degree C \end{gathered}`

To find the amount of energy released, then apply the below formula

`\text{ q = mc \lparen}\theta2\text{ - }\theta1)`

Recall, that the specific heat capacity of steam (c) is 2.03 J/g degrees Celcius

`\begin{gathered} \text{ q = 245 }*\text{ 2.03 \lparen-4.5 - 106\rparen} \\ \text{ q = 245 }*\text{ 2.03 \lparen -110.5\rparen} \\ \text{ q = -54,957.175J} \end{gathered}`

Therefore, the amount of heat released is -54, 957.175J