How many kilojoules of energy are absorbed when 800.0g of water is heated from 20.0º C to 50.0º C

Question

Carissa Coleman

Chemistry

14 April, 15:45

How many kilojoules of energy are absorbed when 800.0g of water is heated from 20.0º C to 50.0º C

+5

Answers (1)

Know the Answer?

Moran · Answer 1

Answer is: 100,464 kJ energy are absorbed.

m (water) = 800,0 g.

T₁ = 20°C.

T₂ = 50°C.

ΔT = T₂ - T₁.

ΔT = 50°C - 20°C.

ΔT = 30°C.

c (water) = 4,186 J/g·°C.

Q = m · c · ΔT.

Q = 800 g · 4,186 J/g·°C · 30°C.

Q = 100464 J = 100,464 kJ.

c - specific heat of water.