We are asked to find the mass of 1.56 x 10 ^{26} atoms of magnesium in grams.

1. Compute for the number of moles Magnesium:

To find the mass of 1.56 x 10^{26} atoms of magnesium, we use the equation;

$\overline{){\mathbf{moles}}{\mathbf{}}{\mathbf{Magnesium}}{\mathbf{}}{\mathbf{=}}\frac{\mathbf{}\mathbf{number}\mathbf{}\mathbf{of}\mathbf{}\mathbf{atoms}\mathbf{}\mathbf{Magnesium}}{\mathbf{Avogadros}\mathbf{}\mathbf{number}}\mathbf{}}$

Where **Avogadros number = 6.02 x 10**^{23 }**particle or atoms /mole**

What is the mass of 1.56 x 10 ^{26} atoms of magnesium in grams?

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