What is the number of moles of beryllium atoms in 36 g of be?

Explanation:

Number of moles is the number of particles present in a specific substance.  Therefore, we can calculate number of moles as follows.

    Number of moles =

Molar mass of Be is 9.0 gram/ mol. Thus, calculate the number of moles of beryllium atoms in 36 g of Be as follows.

           Number of moles =      

                               =

                               = 0.4 mol

Thus, we can conclude that there are 0.4 mol of of beryllium atoms in 36 g of Be.

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