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21-07-2020
Chemistry

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How much heat is needed to raise the temperature of water with mass of 27.0 g at 20.0°C to 45.0°C?

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21-07-2020

Answer:

2835 J

Explanation:

Take the specific heat capacity of water as 4.2 J/ g°C.

Energy (heat) = mass x specific heat capacity x change in temperature

(E= mcΔT)

E = 27 x 4.2 x (45-20)

E = 2835 J

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