Latent Heat Calculations

the symbol for specific latent heat is

• c

• L

• Q

• m

The __________________ of a liquid is the quantity of heat in joules required to convert 1 kilogram of the liquid (at its boiling point) to vapour or gas, without any change in temperature.

• Latent heat of vaporisation

• Latent heat of fusion

Tags

NGSS.MS-PS1-4

How much energy is required to change 5 kg of ice at 0 °C into water at the same temperature? (latent heat of fusion is 3.36 X10^6J/kg )

• 16.1 Xundefined

• 16.8 Xundefined

• 15.1 Xundefined

• 16.8 Xundefined

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

• M = 5.9 Xundefined

• C = 5.9 Xundefined

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the formula to calculate specific latent heat of vaporisation?

• L = Q/m

• c = Q/(mΔƟ)

• Q = mcΔƟ

• Q = mL

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

• 2.55  x undefinedJ

• 2.28 x undefinedJ

• 2,280 x undefined

• 3.28  x undefinedJ

Tags

NGSS.MS-PS1-4

The graph shows the cooling curve of a substance.
The specific latent heat released at stages?

• CD and FG

• DE and EF

• EF and FG

• DE and FG

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?

• Part I

• Part II

• Part III

• Part IV

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Specific latent heat is the amount of energy required to change the state of 1 kg of a substance without changing its ___________.

Tags

NGSS.MS-PS1-4

What is the specific latent heat of fusion?

• The amount of heat required to change 1 kg of a solid into a liquid without a change in temperature.

• The amount of heat required to change 1 kg of a liquid into a gas without a change in temperature.

• The amount of heat required to change 1 kg of a gas into a liquid without a change in temperature.

• The amount of heat required to change 1 kg of a solid into a gas without a change in temperature.

Tags

NGSS.MS-PS1-4