Question

Calculate the number of moles in 49g of H2SO4 ( atomic mass of H = 1, O = 16, S =32)

Answer 1

Answer:

The number of moles in 49 g of $H_{2} SO_{4}$ is 0.5 moles.

Explanation:

Number of moles = given mass/molar mass

Given mass = 49 g

Given that the atomic mass of H = 1, O = 16, S = 32

Molar mass of $H_{2} SO_{4}$ = ( 1 * 2) + (32) + (16 * 4)

                                   = 98 g/mol

Number of moles = given mass/molar mass

                             = $\frac{49}{98}$

                             = 0.5 moles