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4 years ago

How much total energy must be absorbed by a 150 g sample of ice at 0.0°C that it melts

Chemistry

1 answer:

zubka84 [21]4 years ago

7 0

Answer:

The answer to your question is Qt = 15750 cal

Explanation:

Data

mass = m = 150 g

Initial temperature = T1 = 0°C

Final temperature = T2 = 25°C

Process

1.- Calculate the Latent heat of fusion

Latent heat of fusion for water = l = 80 cal/g

Heat = Q

Formula

Q = ml

Substitution

Q = (150)(80)

Simplification and result

Q = 12000 cal

2.- Calculate the Specific heat

Specific heat of water = C = 1 cal/g°C

Formula

Q = mCΔT

Substitution

Q = (150)(1)(25 - 0)

Simplification and result

Q = 3750 cal

3.- Calculate the total heat

Qt = 12000 + 3750

Qt = 15750 cal

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