How many moles of atoms are in 2.00 g of 13c?

There are 0.154 moles of atoms in 2.00 g of carbon-13.

Further Explanation: Moles, Atomic mass and Molecular mass  1 mole of a pure substance contains a mass that is equal to the relative atomic mass or molecular mass of the substance. Therefore; molar mass is given as grams per mole of a substance  

Hence;

Molar mass = mass of a substance/ Number of moles  

     g/mol = g /mole  

Thus;

M = m/n; where M is the molar mass, m is the mass and n is the number of moles From this relationship we can therefore, calculate mass by multiplying the number of moles by molar mass of a substance.

That is; Mass = moles x molar mass  

To calculate number of moles;

We have; n = m/M

Number of moles = Mass of the substance/ Molar mass

In our case;

Mass = 2 g of Carbon-13  

Molar mass = 13.0 g/mol  

Since; Number of moles = Mass/ molar mass

Thus;

Moles = (2.0 g)/ (13.0 g/mol)

          = 0.154 moles  

Keywords: Moles, Molecular mass, relative atomic mass  

Learn more about: Relative atomic mass: Moles calculation: Molar mass:

Level: High school  

Subject: Chemistry  

Topic: Moles  

Sub-topic: Moles, molecular mass and mass of a pure substance.

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