Question

Two elements X (Atomic mass 75) and Y (Atomic mass 16) combine
to give a compound having 75.8% X. The formula of the compound is

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Answer 1

Answer:

When two elements X (Atomic mass 75) and Y (Atomic mass 16) combine to give a compound having 75.8% X, the formula of the compound would be $\mathrm{XY}_{2}$

Composition of the compound = 75.8%(X) + 24.2% (Y)

Composition of X = 75.8%

Composition of Y = 24.2%

Atomic mass of X = 75

Atomic mass of Y = 16

Atomic ratio of $X=\frac{75.8}{75}$ = 1.011=1 (upon simplifying the ratio)

Atomic ration of $Y=\frac{24,2}{16}$= 1.513 = 2 (upon simplifying the ratio)

So the empirical and molecular formula of the new compound would be: \mathrm{XY}_{2}.

Answer 2

Answer:

answer is XY2

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