- #1

- 173

- 0

**AS Level help (Energy questions)**

I didn't really know where to post this thread to so I'm sorry if it's in the wrong place.

I'm really stuck on some homework questions. I've been trying to figure them out all week and now they have to be handed in tomorrow.

I'd really appreciate it if someone could explain to me how to go about obtaining the answers. I'll post one question at a time.

An electric heater immersed in some water raises the temperature from 40ºC to 100ºC in 6 min. After another 25 min it is noticed that half the water has boiled away. What value does this experiment give for the specific latent heat of vaporisation of water?

Thank you very much.

Cathy

Last edited: