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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Korokian on September 07, 2006, 09:20:29 PM

Title: Chlorine Isotopes
Post by: Korokian on September 07, 2006, 09:20:29 PM

A college problem...

Chlorine consists of 2 stable isotopes. Cl with a mass of 35 and Cl with a mass of 37.  32 Percent of the chlorine in an insteller grain are found to be Cl with a mass of 35.  What is the atomic weight of chlorine in this sample?

Title: Re: Chlorine Isotopes
Post by: AWK on September 08, 2006, 01:52:21 AM

Just calculate mean mass from a percent content (32 and 68 %)

Title: Re: Chlorine Isotopes
Post by: Korokian on September 08, 2006, 06:34:35 AM

that is the only information i was given, i do not know how to do this problem

Title: Re: Chlorine Isotopes
Post by: AWK on September 08, 2006, 08:20:21 AM

0.32x35+0.68x37=
Use more precise tomic masses

Title: Re: Chlorine Isotopes
Post by: Korokian on September 08, 2006, 05:44:20 PM

thank you...