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August 28, 2015

Homework Help: first year chem

Posted by John on Thursday, December 5, 2013 at 2:21am.

There are two naturally occurring isotopes of chlorine with ratios of 76% and 24%. One mole of PCl3 is made using a sample of isotopically pure chlorine gas (containing only one of the two isotopes). The product weighs 142 g. If chlorine gas containing the other isotope were used, one mole of the PCl3 would weigh?
Answer = 136g

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