P1
- Created by: gums
- Created on: 27-07-15 22:47
Other questions in this quiz
2. The specific latent heat of melting for lead is 22.4 kJ/kg and that of oxygen is 13.9 kJ/kg. This means:
- lead melts at a high temperature
- more energy is needed to melt lead than is needed to melt oxygen
- more energy is needed to heat lead than is needed to heat the same mass of oxygen by the same amount
3. Which statement about units is correct?
- Temperature is measured in °C and energy in J
- Temperature is measured in °C and energy in W
- Temperature is measured in °C and energy in K
- Temperature is measured in J and energy in °C
4. Which equation is correct?
- energy = mass x specific latent heat x temperature
- energy = mass x specific heat capacity x change in temperature
- energy = mass x specific heat capacity x temperature
5. Energy = mass x specific latent heat. If the specific latent heat of melting of water is 334 kJ/kg, how much energy is needed to melt 100 g of ice?
- 3.34 kJ
- 33.4 kJ
- 33,400 kJ
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