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Approximately how many joules of heat energy are released when 50 grams of water are cooled from 70°C to 60°C?

User Vasile
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2 Answers

5 votes

Answer:

it is 2,100J

Step-by-step explanation:

User Xharlie
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7.7k points
3 votes

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.

User Afzaal Ahmad
by
8.2k points

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