Question

Steam at `100^@C` is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at `15^@C`till the temperature of the calorimeter and its contents rises to `80^@C` . The mass of the steam condensed in kilogram is
A. `0.130`
B. `0.065`
C. `0.260`
D. `0.135`

Answer 1

Correct Answer - A
Heat lost by steam = Heat gained by water clorimeter
`:.mL+ms (100-80)=1.12xxsxx(80-15)`
or `m[540+(1xx20)]=1.20xx1xx65`
or `m=(1.12xx1xx65)/(650)=(65)/(500) kg or m =0.13 kg`