Question

heat is supplied at a constant to 0.4kg of ice at 0centigrade. all the ice converted into water in 5 minutes how much time will be required to 1) rise the temperature of water to it's boiling point, and then 2) to change all the water into steam 3) finally tell the total time which container Will be completely empty​

Answer 1

Answer:

Given: m=100g,t=2 minutes=2×60 sec.

Heat energy taken by ice at 0

∘

C to convert to water at 0

∘

C.

Q=mL=100×336=33600 J

∴P=

t

Q

=

2×60

33600

=280 J/S

The heat energy required to convert water at 0

∘

C to 20

∘

C.

Q=mc△t=100×4.2×20=8400 J

Q=P×t

8400=280×t

t=30sec=0.5 min