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August 29, 2015

Homework Help: chemistry

Posted by anonymous on Tuesday, February 19, 2008 at 2:33pm.

A sample of 690. moles of O2 reacted according to the balanced equation,
4Al+3O2=2Al2O3
after reaction, 163 moles of O2 remained. calculate the moles of Al2O3 formed.

Ive tried this problem many times and i keep getting it wrong. please help! thanks

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