How is the SI unit of heat related to the unit calorie?
1 J = 1000 cal
1 J = 3.14 cal
1 J = 0.24 cal
1 J = 4.18 cal
1 J = 0.24 cal as 1 cal is 4.2 J
1 J equals to :
(a) 0.24 cal (b) 4.18 cal
(c) 1 cal (d) 1 kcal
Find the amount of heat in calories required to convert 10g of ice at –10°C to water at 10°C
[C of ice = 0.5 cal/g°C, C of water = 4.2J/g°C = 1 cal/g°C, L of ice = 80cal/g]