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The percent composition of the compound formed when 9.17 grams iron combine with 3.94 grams oxygen is

User Alexey Shokov
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1 Answer

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To solve this question, we need to use the following formula:

% by mass = (mass of a component/total mass) x 100%

So first, we need to calculate the total mass of the compound:

9.17 + 3.94 = 13.11

Now we can calculate the percent composition of Iron and of Oxygen.

Iron:

% by mass = (mass of Iron/total mass) x 100%

% by mass = (9.17/13.11) x 100%

% by mass = 69.9%

Oxygen:

% by mass = (mass of Oxygen/total mass) x 100%

% by mass = (3.94/13.11) x 100%

% by mass = 30.0%

Answer: 69.9% of Iron and 30.0% of Oxygen

User Danah
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