Question

How many oxygen molecules are present in 340gm of hydrogen peroxide​

Answer 1

there are 9.9957 mol O2 in 340 g H2O2

Step-by-step explanation:

• Mw H2O2 = 34.0147 g/mol

reaction:

• H2 + O2 ↔ H2O2

⇒ mol H2O2 = 340 g H2O2 * ( mol H2O2 / 34.0147 g H2O2 ) = 9.9957 mol

⇒ mol O2 = 9.9957 mol H2O2 * ( mol O2 / mol H2O2 ) = 9.9957 mol