How do u find how many atoms are in compunds give examples or answer thes? thanx?

Question

H2SO4

NaSO3

Answer 1

This is a matter of just reading the formulas.

H2SO4 - the 2 and 4 are subscripts but I can't do that on Yahoo.

A subscript after a symbol tells you how many of that kind of thing you have. So in this example, you have two hydrogen atoms, only one sulfur (no subscript), and four oxygen atoms.

I think your second formula should be Na2SO3. There is no compound NaSO3.

Hope this helps.

Answer 2

you go by the subscripts

Hydrogen has 2 atoms

and there is one molecule of SO4
and that has 1 atom of S and 4 atoms of O

Answer 3

do you know how many moles there are?or the mr or litres at s.t.p?