Friday
October 24, 2014

Homework Help: Organic Chemsitry

Posted by Bobby on Friday, January 27, 2012 at 12:40pm.

By knowing the natural abundance of minor isotopes, it's possible to calculate the relative heights of M+ and M+1 peaks. If natural abundances are 12C - 98.9% and 13C - 1.10%, what are the relative heights, to the nearest 0.1%, of the M+ and M+1 peaks in the mass spectrum of ribose, C5H10O5?

Ignore the contributions of isotopes like 2H (deuterium; 0.015% natural abundance) and 17O (0.04% natural abundance) that are small.

I initially just substituted 13 for 12 when calculating the molar mass but that didn't work. How else should I go about this problem.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

O Chem - By knowing the natural abundance of minor isotopes, it's possible to ...
Chem - Bromine has two natural occurring isotopes (Br-79 and Br-81) and has an ...
chemistry - Silicon has three naturally occurring isotopes: Si-28 with mass 27....
Chemistry - How would I solve this: The atomic mass of 6/3Li and 7/3Li are 6....
Chemistry - I just need help with this one question, and then once I know how to...
Chemistry - On another planet, the isotopes of titanium have the following ...
chemistry - Silver has two naturally occurring isotopes (Ag-107 and Ag-109). (a...
chemistry - This is a lengthy problem, but I really don't understand it. Any ...
Chemistry - Element X has two natural isotopes:X-6 (6.015amu) and X-7 (7.016amu...
Chem - (b) If the natural abundance of Ag-107 is 51.84%, what is the natural ...

Search
Members