Question

How many moles of molecules are there in 6g of Oxygen gas

Answer 1

Mass in grams = 6 g

Molar mass of oxygen = 6 g/mol

No of moles = (mass in grams)/molar mass

No of moles of oxygen = 6/6 = 1 mol

No of molecules = (no of moles) x Avogadro's numbers

No of molecules = 1 x 6.02x10^23

No of molecules of oxygen = 6.02x10^23.

hopefully its helped u dear :)

Answer 2

Explanation:

Molar mass O2 = 32g/mol

Mol O2 in 1.6g = 1.6g / 32g/mol = 0.05 mol O2

1 mol O2 = 6.022*10^23 molecules

1.6g O2 = 0.05 mol O2 = 0.05*6.022*10^23 = 3.011*10^22 molecules O2

1 molecules O2 contains 2 atoms O .

Number of O atoms in 1.6g O2 = 2*3.011*10^22 = 6.022*10^22 atoms