October 2018 1 539 Report
Air yang kalor jenisnya 4.200 J/kg. derajat Celcius memerlukan kalor 840 kJ ketika suhunya dinaikkan dari 30 derajat Celcius menjadi 70 derajat celcius. Massa air yang digunakan adalah..............
a. 0,05 kg
b. 0,5 kg
c. 5,0 kg
d. 50 kg

pake cara ya, plizz
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