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2.2 Thermal properties and temperature

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Question 81

Water in a beaker gains thermal energy at a rate of 2500 W. The water is already at its boiling point.

The specific latent heat of vaporisation of water is 2260 J/g.

How long does it take for 150 g of the water to vaporise?

A

90 s90\text{ s}90 s

B

136 s136\text{ s}136 s

C

166 s166\text{ s}166 s

D

339 s339\text{ s}339 s

Markscheme

2.2 Thermal properties and temperature Questions

  1. IGCSE
  2. /Physics
  3. /2.2 Thermal properties and temperature

528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.

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