I think there's not enough info in the question: could someone please tell me?

Methanol (CH (subscript 3) OH) is burnt in a spirit burner and the heat evolved from the combustion of 0.10 grams of the fuel is used to heat 100g of water.

(a) If initial temperature is 20 Degrees Celsius, calculate final temperature of the water.

Now, using H = mass x heat capacity x change in temperature
I have two unknowns - H and change in temperature.

How can I find change in temperature then?

Many thanks!

Hi again
Yes you need H
So you pick up value of heat of combustion of
Methanol from the standard value table provided in your book.
This value is for the 1 mole
Calculate H for  the amount given
Now you can use it for the calculations

Thanks Uma!
You're a genius. I wasn't aware there was a table in the book for these values.


I'm really worried for my Chem test tomorrow.

Thanks heaps for your prompt replies on a Sunday.