Diamond is one form of elemental carbon. An engagement ring contains a diamond weight 1 carats. One carat is equal to 200 mg of carbon.  How many atoms are present in the diamond? [A]  (enter answer as 4 sig fig and as E is 10^ so 1x10^1 would be 1E1)

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".