Question

calculate number of oxygen atom in 4.9 g in Sulfuric acid​

Answer 1

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Explanation:

H2SO4 → O ( oxygen )

98gm - 1 mole ( 6.022 × 10²³ gm/mole )

20gm - ?

6.022×10²³/1 = 20/98

1.22×10²³ gm/mole

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Answer 2

Given ⇒

Mass of the Sulphuric Acid = 4.9 g.

Molar mass of the sulphuric acid = 98 g/mole.

Now, Using the Formula,

No. of moles of the Sulphuric Acid = Mass/Molar mass.

∴ No. of moles of the sulphuric acid = 4.9/98

∴ No. of moles of the sulphuric acid = 0.05 moles.

Hence, the number of moles of the Sulphuric Acid is 0.05 moles.

Hope it helps.