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if 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound what is the percent compostiton of Hg in the compound

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znk

Answer:

71.5 %

Explanation:

                mercury + bromine ⟶ compound

Mass/g:       60.2          24.0

According to the Law of Conservation of Mass, the mass of the product must equal the mass of the reactants

Mass of product = 60.2 + 24.0

Mass of product = 84.2 g

The formula for percent composition is

% by mass = mass of component/total mass × 100 %

% Hg = 60.2/84.2 × 100

% Hg = 0.7150 × 100

% Hg = 71.5 %

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