how many calories must be added to warm 45 g of water from 12°c to 76°c?

Question

Question

science chemistry

Answer 1

Answer #1

Ans :- Calories must be added to warm 45 g of water from 12°c to 76°c = Q = 2891.0 calories

Explanation :-

We know that ,

Amount of heat required in J (Q) = mass of water (m) x specific heat capacity of water (C_p) x Change in temperature (ΔT)

So,

Q = (45 g) x (4.2 J/g.⁰C ) x (76 - 12 )⁰C

Q = 12096 J

Q = 12.096 KJ

Q = 2.8910 Kcal.

Q = 2891.01 calories

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Answer 2

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