Question

calculate the number of moles in 1.96g of sulphuric acid​

Answer 1

Sulphuric acid is $H_{2}SO_{4}$

The molar mass of $H_{2}SO_{4}$ = $2\times 1 + 32+4\times 12 = 98g$

Now,

number of moles,

$n = \frac{given\,\,mass}{molar\,\,mass} = \frac{1.96}{98} = 0.02$

∴ number of moles in 1.96g of sulphuric acid​ is 0.02

Hope it helps! Please mark as brainliest!

Answer 2

Given:

1.96 grams of sulfuric acid.

To find:

We have to find the number of moles.

Solution:

The chemical formula of sulfuric acid is $H_2SO_4$.

The atomic weight of H is 1.

The atomic weight of Sulfur is 32 and Oxygen is 16 grams.

Thus the molecular weight of sulfuric acid is 1×2+32+4×16=98 grams.

98 grams of sulfuric acid has 1 mole.

1.96 grams of sulfuric acid has 1.96/98=0.02 moles.

Thus 1.96 grams of sulfuric acid has 0.02 moles.