Question

When 2.94 g of a metal combined with fluorine gas, 7.47 g of a metal fluoride formed. Given this information, calculate the mass %F in the metal fluoride that formed.

Answer 1

The mass % F in the metal fluoride that is formed is 60.64%

calculation

Step 1: calculate the mass of fluorine (F)

mass of F = mass of metal fluoride - mass of the metal

= 7.47 g - 2.94 g= 4.53 g

Step 2: calculate the % mass of F

Mass % of F = mass of F / mass of metal fluoride x 100

mass % of F is therefore = 4.53 g/ 7.47 x 100 = 60.64%