What is the unit of heat capacity?
J / k / mol
J / mol
J k
J / k
What is the specific latent heat of fusion of water?
80 Cal g-1
4200 J kg-1
336 J kg-1
2260 J g-1
Which of the following represents the cooling curve of naphthalene?
The specific heat capacity of hydrogen is
42000 J / kg / k
14630 J / kg / k
4180 J / kg / k
2100 J / kg / k
Calculate the amount of heat energy required to raise the temperature of 100 g of copper from 20 °C to 70 °C?
195000 J
1950 kJ
1950 J
19500 kJ
One calorie of heat is the heat energy required to raise the temperature of 1 g of water from
13.5 °C to 14.5 °C
14.5 °C to 15.5 °C
15.4 °C to 15.5 ° C
14.4°C to 15.5 ° C
A cylindrical vessel which is used to measure the amount of heat gained or lost by a body when it is mixed with other body is called
Manometer
Hydrometer
Calorimeter
Barometer
The reverse change from liquid to solid phase with rejection of heat at a constant temperature is called
melting
fusion
freezing
boiling
10 g of ice at 0 °C absorbs 5460 J of heat energy to melt and change to water at 50 °C. Calculate the specific latent heat of fusion of ice.
436 J g-1
336 J g-1
546 J g-1
420 J g-1
The change from soild to vapour directly at a constant temperature is called:
Condensation
Sublimation
Regelation
Vaporisation
