Kak tolong dibantu mau dikumpul​

c.air = 4200 J/kg°C

delta t = 65°C – 25°C = 40°C

Q = 84.000 J

dit : m = …?

Q = m x c x delta t

m = Q / c x delta t

m = 84.000/ 4200 x 40

m = 20/40

m = 1/2 kg

m = 500 gram