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Question 4 (9 points)

How many joules of energy are required to hear 200.0 grams of water from 25.0°C to 125.0°C?

User Ruttyj
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1 Answer

1 vote

Answer:

62.7KJ

Step-by-step explanation:

How many joules are required to heat 200 grams of water from 25˚C to 125˚C? 524.8 kJ

Start with Specific Heat because the water is not going through a phase change.

m= 200 g

Cp= 4.18 J/g˚C .......must be given

∆T= 100˚C - 25˚C = 75˚C

q =mCp∆T

q = (200g)(4.18 J/g˚C)(75˚C)

q = 62700 J = 62.7 kJ

User Mlynn
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