Question

an m peak has a relative intensity of 42%. an m 1 peak has a relative intensity of 6.5%. how many carbons are in the molecule?

Answer 1

5 carbons are in the molecule. Isotopes are atoms with a constant number of protons but a variable number of neutrons.

What factors affect an isotope's relative abundance?

Isotopes are atoms with a constant number of protons but a variable number of neutrons. Atomic masses vary among isotopes.

The proportion of atoms with a particular atomic mass that can be found in a sample of an element that is found naturally is known as the relative abundance of an isotope.

Relative abundance chemistry issues should be solved using the formula below:

(M1)(x) + (M2)(1-x) = M (E)

Issue illustration Determine the relative abundance of the isotopes if the masses of two different nitrogen isotopes are 0.42 amu for carbon-0.42 and 0.065 amu forcarbon-0.065.

Equation x = 0.996 can be found using algebra.

0.42 * 0.996 + 0.065 *0.996 = 0.424794.

5 carbons are in the molecule.  

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