Question

Calculate the mass in grams of 0.800 mole of H2CO3.. . 1)49.6. 2)23. 3)78

Answer 1

H₂CO₃ = 2* 1 + 12 + 3*16 = 62 g / mol

0.8 mole of it.

Mass = 0.8 * 62 = 49.6 g

Answer 2

Answer : The mass of
`H_2CO_3` is, 49.6 grams

Solution : Given,

Moles of
`H_2CO_3` = 0.800 mole

Molar mass of
`H_2CO_3` = 62 g/mole

Formula used :

`\text{Moles of }H_2CO_3=\frac{\text{Mass of }H_2CO_3}{\text{Molar mass of }H_2CO_3}`

Now put all the given values in this formula, we get the mass of
`H_2CO_3`

`0.800mole=\frac{\text{Mass of }H_2CO_3}{62g/mole}`

`\text{Mass of }H_2CO_3=49.6g`

Therefore, the mass of
`H_2CO_3` is, 49.6 grams