Question

How much heat is needed to raise the temperature of 50 g of a substance by 15°C when the specific heat is 0.92 J/g-°C?

A.) 65 J
B.) 250 J
C.) 345 J
D.) 690 J

Answer 1

690j

Step-by-step explanation:

Use the formula

q

=

m

C

Δ

T

q = heat absorbed or released, in joules (J)

m = mass

C = specific heat capacity

ΔT = change in temperature

Plug known values into the formula.

q

=

50

(

.92

)

(

15

)

q

=

690

therefore, 690 joules of heat energy are needed.