Question

Steam at `100^(@)C` is passed into `1.1 kg` of water contained in a calorimeter of water equivalent `0.02kg` at `15^(@)C` till the temperature of the calorimeter and its content rises to `80^(@)C`. What is the mass of steam condensed? Latent heat of steam = `536 cal//g`.
A. `0.130`
B. `0.065`
C. `0.260`
D. `0.135`

Answer 1

Correct Answer - D
Heat lost = Heat gained
` m_("steam") xx 540 = 1100 xx 1 xx (80-15)+20xx 1 xx (80-15)`
`therefore ` mass of steam condensed = `0.13` kg