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

User Roneo
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2 Answers

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

Answer: 68.3% rounded
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.
User Smit Patel
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