Question

27. How much energy is required to change 150.0 g of water from 10.0°C to 45.0°C? (Cwater =

4.18 J/g °C)
A. 125.43
B. 627.03
C. 219003
D. 28200 3

Answer 1

The answer to your question is letter C. 21900.3. My result was 21945 J, letter C is close to this result.

Step-by-step explanation:

Data

mass = 150 g

temperature 1 = T1 = 10°C

temperature 2 = T2 = 45°C

Cw = 4.18 J/g°C

Formula

Q = mCΔT = mC(T2 - T1)

Substitution

Q = (150)(4.18)(45 - 10)

Simplification

Q = (150)(4.18)(35)

Result

Q = 21945 J