Question

How much heat is needed to raise the temperature of 9g of water by 17C?

Answer 1

Given: Temperature t = 16 ⁰C; Specific heat of water c = 4.184 J/ g ⁰C
Required: Heat q = ? Mass m = 9 grams Formula to follow q = mcΔT
q = (9 grams)(4.184 J/g ⁰C)(16 ⁰C) = 602.496 J

Answer 2

640.46 J

Step-by-step explanation:

m = 9 g

c = 4.186 J/g C

Rise in temperature = 17 C

Heat used, H = mass x specific heat x rise in temperature

H = 9 x 4.186 x 17 = 640.46 J