Question

What mass of oxygen will contain the same number of molecules as 6.4 g of H2SO4?
please answer need it urgently

Answer 1

14 mole of sulphur dioxide will have the same number of molecular as 14 mole of oxygen.

Answer 2

Answer:

2.09g of O₂ will contain the same number of molecules as 6.4 g of H₂SO₄.

Explanation:

Given,

mass of H₂SO₄ = 6.4g

molar mass of H₂SO₄  = 2×1+32+4×16 = 98g/mol.

molar mass of O₂ = 2×16 = 32g/mol.

moles of  H₂SO₄ = mass of H₂SO₄ / molar mass of H₂SO₄

⇒                         = 6.4 / 98 = 0.0653 moles

one mole of any substance contains 6.022×10²³ molecules.

if the number of molecules present is the same, then the number of moles also be equal.

moles of O₂ = moles of  H₂SO₄

mass of O₂ = moles of O₂ × molar mass of O₂

⇒                = 0.0653 × 32 = 2.0896 ≈ 2.09g

Hence, the required answer is 2.09g.