Question

How many grams are in $$2$$ moles of carbon?

Answer 1

Hint: The mole is a unit to measure the amount of a substance in chemical terms. A mole is defined as the amount of substance which is equal to the molar mass of that substance.

Complete answer:
Carbon is an element in the periodic table with atomic number $$6$$. It consists of $$6$$ protons, $$6$$ electrons and $$6$$ neutrons. The number of moles is determined by the amount of the substance present in a fixed quantity.
The mole concept is an important aspect in chemistry. It is very helpful in chemical calculations for obtaining the amount of substance required for a reaction.
The mole of a substance is defined as the amount of substance present in equal amount to the molecular weight or molar mass of an atom or a molecule. Also a mole is equal to the amount of substance which contains the number of atoms equal to $$6.023\times {10}^{23}$$.
The molar mass of a carbon atom is $$12amu$$. The unit $$amu$$ stands for atomic mass unit. Thus for convenience of measurement we generally express the mass of the carbon atom is $$12g$$.
From the above concept of mole we tell that one mole of carbon contains $$12g$$ of carbon, which is the molar mass of carbon. So the amount of carbon present in $$2$$ moles of carbon =$$2\times 12g=24g$$.

Hence $$24g$$ of carbon is present in $$2$$ moles of carbon.

Note: The molar mass is also termed as the total mass of one mole of a substance. The molar mass of water molecules is $$18g$$. So it is obvious that one mole of water contains $$18g$$ of water. The unit of molar mass is $$g/mol$$ or $$kg/mol$$.