Question

Total number of atoms in 196 amu H2SO4 are

Answer 1

Mass of 1 molecule of H2SO4 = 98 amu
Thus, molecules = 2
thus number of atoms = 2*7 = 14

Answer 2

Answer: The number of atoms in the given amount of $H_2SO_4$ are $84.308\times 10^{23}$

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$  

Given mass of sulfuric acid = 196 g

Molar mass of sulfuric acid = 98 g/mol

Putting values in above equation, we get:

$\text{Moles of }H_2SO_4=\frac{196g}{98g/mol}=2mol$

In 1 mole of $H_2SO_4$, 1 mole of sulfur atom, 2 moles of hydrogen atoms and 4 moles of oxygen atoms are present. In total 7 atoms of elements are present in 1 mole of sulfuric acid.

According to the mole concept:

1 mole of a substance contains $6.022\times 10^{23}$ number of atoms.

So, 2 moles of $H_2SO_4$ will contain $2\times 7\times 6.022\times 10^{23}=84.308\times 10^{23}$ number of atoms.

Hence, the number of atoms in given amount of sulfuric acid is $84.308\times 10^{23}$