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Is 0.257G sample of chromium reacts with oxygen to form 0.3763 of chromium oxide what is the mass percent of chromium

Is 0.257G sample of chromium reacts with oxygen to form 0.3763 of chromium oxide what is the mass percent of chromium
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Is 0.257G sample of chromium reacts with oxygen to form 0.3763 of chromium oxide what is the mass percent of chromium

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User Roneo
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2 Answers

1 vote
Divide the mass of chromium by the total mass of chromium oxide
.257/.3763= .68296
X100 for percentage

Answer: 68.3% rounded
answered
User Placplacboom
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2 votes
Its smaller mass mass is given as 37.15 g and moller mass of the C. 02 is 44 g per mole From here. The number of moles we get is 0.844 mol.
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User Smit Patel
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