Question

What is the percent by mass of magnesium sulfate in MgSO4 · 7H2O?

Use .

12.04%

48.83%

51.17%

86.98%

Answer 1

B. 48.83%

Step-by-step explanation:

Edge

Answer 2

Answer: 48.83%

Explanation: Mass percent is the ratio of mass of the particular substance to the total mass of given compound.

`{\text {mass percentage}}=\frac{\text{mass of }MgSO_4}{\text {total mass}}* 100\%`

Mass of
`MgSO_4`= 120g

Mass of
`MgSO_4.7H_2O`= 246g

`{\text {mass percentage}}=(120g)/(246g)* 100\%=48.83\%`