Question

How many oxygen atoms are there in 4.9 g of H2SO4
(Mr: H2SO4= 98)​

Answer 1

1 mole (98g) H₂SO₄= 4 oxygen atoms

           1 g H₂SO₄= (4÷98) oxygen atoms

      So, 4.9 g H₂SO₄= (4÷98)×4.9

                                 =0.2 oxygen atoms

Answer 2

Answer:

h2o is right answer of okkk