Latent Heat Calculations 2

A student conducts an experiment to determine the latent heat of fusion of ice. She melts 50 grams of ice at 0°C without any temperature change using a certain amount of heat energy. The energy provided to melt the ice is measured as 16,750 Joules. Calculate the latent heat of fusion of the ice.

• 33.5 J/kg

• 335 J/kg

• 3350 J/kg

• 335000 J/kg

• 167.5 J/kg

Tags

NGSS.HS-PS3-4

A certain substance has a latent heat of vaporization of 2250 kJ/kg. To vaporize this substance, 9,000,000 Joules of energy is required. Calculate the mass of the substance that was vaporized.

• 5kg

• 4kg

• 3kg

• 6kg

• 2kg

Tags

NGSS.HS-PS3-1

How much heat energy is needed to melt 200 mg of a metal if the latent heat of fusion of the metal is 89 kJ/kg?

• 1.78 J

• 178 J

• 17.8 KJ

• 17800 J

• 17.8 J

What is latent heat?

• The heat required to change the temperature of a substance without a phase change.

• The heat released by a substance during a phase change.

• The heat absorbed or released by a substance during a phase change.

• The heat required to increase the temperature of a substance by 1°C.

Tags

NGSS.MS-PS1-4