Question

Calculate no. Of molecules of oxygen in 4.9g of h2so4

Answer 1

Answer:

Molar mass of H2SO4 = 2+32+64=98

No.of mols of H2SO4= Given Weight/Molar mass

                                        = 4.9/98

                                        = 0.05 mols  

No.of molecules of Oxygen= Atomicity x no.of mols x Avergadoes No.

                                               = 4 x 0.05 x 6.022 x 10*23

                                               = 1.204 x 10*23