2 Answers

Afzaal Ahmad · Answer 1 · 2021-12-08T04:27:40+0000

Answer:

Q = -2090 J

Step-by-step explanation:

Given that,

Mass, m = 50 g

Water is cooled from 70°C to 60°C.

We need to find how many heat energy are released. Heat released is given by :

$Q=mc\Delta T$

c is the specific heat of water,
$c=4.18\ J/g-C$

Putting all the values,

$Q=50* 4.18* (60-70)\\\\Q=-2090\ J$

So, the heat energy released is 2090 J and negative sign shows heat is released.

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