May 29, 2016

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,
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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