Question

I can't do Miscellaneous calculations!

E.g.
How many moles of oxygen atoms are present in 2.5 mole of water molecules?

Answer 1

So just balance the eqn and take the numbers infront of it
take the unknown (the one that the qn is asking for) and ratio it with the known variable
and then put in the mol that you know for the known variable and just do math to get the answer for the unknown