DP Physics (last assessment 2024)

Test builder »

Question 21M.2.SL.TZ1.b.i

Select a Test
Date May 2021 Marks available [Maximum mark: 2] Reference code 21M.2.SL.TZ1.b.i
Level SL Paper 2 Time zone TZ1
Command term Estimate Question number b.i Adapted from N/A
b.i.
[Maximum mark: 2]
21M.2.SL.TZ1.b.i

A mass of 1.0 kg of water is brought to its boiling point of 100 °C using an electric heater of power 1.6 kW.

A mass of 0.86 kg of water remains after it has boiled for 200 s.

Estimate the specific latent heat of vaporization of water. State an appropriate unit for your answer.

[2]

Markscheme

«mL = P t» so «L=1600×2000.14» = 2.3 x 106 «J kg-1» ✓

J kg−1 ✓

Syllabus sections