The most common isotope of carbon has an atomic number of 6 and a mass number of 12, while the most common isotope of oxygen has an atomic number of 8 and a mass number of 16. A molecule of CO₂made up of these common isotopes has a molecular weight of ____.

Question

Quizplus · Accepted Answer

The molecular weight of COS (carbon, oxygen, sulfur) using the most common isotopes (carbon-12, oxygen-16, sulfur-32) is calculated as follows: Carbon = 12, Oxygen = 16, Sulfur = 32. Adding these together gives a total molecular weight of 60. However, since the options provided do not include 60, it appears there was a misunderstanding in the question's presentation or a typographical error in the options. Based on the elements mentioned and their most common isotopes, the correct calculation would indeed total 60, not any of the provided options.

The Most Common Isotope of Carbon Has an Atomic Number