If the heat of combustion of graphite is -393.5KJ/mol, so the heat of combustion of 240g of graphite equals

Question

asked Jan 21, 2024 90.7k views

1 Answer

Mwv · Answer 1 · 2024-01-25T09:52:52+0000

Step-by-step explanation:

First, we need to find the number of moles of graphite in 240g.

The molar mass of graphite is 12.01 g/mol (the atomic weight of carbon is 12.01), so:

240g / 12.01 g/mol = 19.98 mol

Now, we can use the heat of combustion per mole to find the total heat of combustion for 240g:

-393.5KJ/mol x 19.98 mol = -7,867.63 KJ

Therefore, the heat of combustion of 240g of graphite is -7,867.63 KJ.