# Problem: Chorline exists mainly as two isotopes 35Cl and 37Cl,a) Which is more abundant?b) How do you know?c) Compute the percentage of chlorine that is the 37Cl isotope.

###### FREE Expert Solution

Isotopes represent atoms of an element that contain the same atomic number (same number of protons), but different mass numbers (different number of neutrons).

a. 35Cl is more abundant

b. The average atomic mass of Cl is 35.45 amu.

Since 35.45 amu is closer to the mass of 35Cl (35 amu) than 37Cl (37 amu), this means that 35Cl has a mass greater contribution to 35.45 as compared to 37Cl

We’re being asked to percent 37Cl. We can use the following equation:

where atomic mass = average atomic mass of the element and f.a. = fractional abundance of the isotope

96% (235 ratings) ###### Problem Details

Chorline exists mainly as two isotopes 35Cl and 37Cl,

a) Which is more abundant?

b) How do you know?

c) Compute the percentage of chlorine that is the 37Cl isotope.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Atomic Mass concept. You can view video lessons to learn Atomic Mass. Or if you need more Atomic Mass practice, you can also practice Atomic Mass practice problems.

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Based on our data, we think this problem is relevant for Professor Enderle's class at UCD.