Question

what is the q (in kj) of the water if 100 g of hot copper shot is placed in 100 g of water at 20 degrees celcius and the temperature of the water/ shot mix is to 30 degrees celcius? (SHwater= 4.2 j/g K)

Answer 1

Q = mc dT
Q = 100*4.2*(303-293) = 4200 J = 4.2 kJ

Answer: 4.2 kJ.