Question

what is the percent composition of a compound containing 32.0 g of bromine and 4.9 g of magnesium?

Answer 1

the whole compound is made up of those 2 elements and those 2 masses. Percent composition is:\[\frac {piece}{whole}\]

Answer 2

86.72% of bromine and 13.28 %of Mg

Answer 3

32.+4.9=36.9
36.9 has 32 g of Bromine then
100 has=86.72%
And remaining is Mg100-86.27=13.2