KiloJoules) 81830

In the washing machine, 6 liters of water were heated from a temperature of 22 degrees to 62 degrees. Find out the weight of 6 liters of water. What heat (in kJ= kiloJoules) did the water receive?

Correct answer:

m =  6 kg
Q =  1008 kJ

Step-by-step explanation:

V=6 l ρ=1 kg/l  m=ρ V=1 6=6 kg
c=4.2 kJ/kg/ t1=22 °C t2=62 °C Δt=t2t1=6222=40 °C  Q=m c Δt=6 4.2 40=1008 kJ

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