Carbon Has Two Naturally Occurring Isotopes, Carbon-12 and Carbon-13

question 102

Multiple Choice

Carbon has two naturally occurring isotopes, carbon-12 and carbon-13. The more common isotope of carbon is carbon-12 with an abundance of 98.93% while carbon-13 has an atomic mass of 13.00335 amu. Calculate the atomic mass of carbon-12 if the atomic mass of carbon is 12.0107 amu.

• A)13.1 amu
• B)13.0 amu
• C)12.0 amu
• D)12.8 amu
• E)12.4 amu

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