Question

help me out with this one

Answer 1

Here is the answer...

The energy required to melt per gram of Ice is 333J.
Therefore the energy required to melt 5g of Ice is 5 times 333J

The energy of absorbed frequency=hf=6.62x10^-34x4.67x10^13=3.09x10^-20J

The no of quanta = Energy required/The energy of absorbed frequency
                              = 333J/3.1x10^-20=107x10^20
                              =10^22

Hope it helps.........