A steam humidifier converts liquid water into steam to increase humidity in a room.
During a brief period of operation, 6.5 g of boiling water is converted into steam.
The specific latent heat of vaporisation of water is 2 260 000 J/kg2\,260\,000\text{ J/kg}2260000 J/kg.
Calculate the energy transferred to change this mass of water into steam. Use the equation:
energy=mass×specific latent heat \text{energy} = \text{mass} \times \text{specific latent heat} energy=mass×specific latent heatPractise AQA GCSE Physics Internal energy and energy transfers with exam-style questions for Foundation and Higher tier. 48 questions covering Internal energy, Temperature changes in a system and specific heat capacity, and Changes of state and specific latent heat, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.