Question

Which of the following is a wrong statement? *

2 points

One mole of any gas at STP occupies 22.4L

One mole of O₂ gas contains 6.022 × 10²³ atoms of oxygen.

One mole of O₂ gas contains 6.022 × 10²³ molecules of oxygen.

Both atomic masses and molecular masses are calculated by comparing with the 12th part of C¹² isotope

Equivalent mass of H₂SO₄ is: *

2 points

196

98

49

24.5

The chemical formulla of Blue vitriol is: *

2 points

FeSO₄ . 7H₂O

Na₂S₂O₈

Na₂B₄O₇.10H₂O

CuSO₄.5H₂O

Which of the following sets of compounds correctly illustrate the law of reciprocal proportions? *

2 points

P₂O₃, PH₃, H₂O

P₂O₅, PH₃, H₂O

N₂O₅, NH₃, H₂O

N₂O, NH₃, H₂O

Mole fraction of methanol containing 1 mole of it in 3 moles of ethanol is? *

2 points

0.75

0.5

0.25

0.125​

Answer 1

Answer:

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