Question

calculate no. Of moles in –

(1) 392g of H2SO4

(2) 6.0222 * 10 22 molecules of oxygen.

(3) 8g of calcium​

Answer 1

Answer:

for no. of mole formula is

no.of mole =given mass /formula mass

1. no. of mole of H2SO4=392/98=4mole
2. Given , no of molecules of oxygen =6.022*10 22.

so, mole=no of molecules *avogadros no (6*10 22)and then solve by putting given terms on this formulae.

3. no of mole of calcium=8/40=1/5.

I hope you will be satisfied from my answer if you again cannot solve it then again I will help you