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vodka [1.7K]
3 years ago
7

6 How many moles are in a 321 g sample of magnesium?

Chemistry
1 answer:
Tatiana [17]3 years ago
3 0

Answer:

13.4mol of Mg

Explanation:

Given parameters:

Mass of magnesium = 321g

Unknown:

Number of moles  = ?

Solution:

The number of moles of a substance is given as;

  Number of moles  = \frac{mass}{molar mass}  

 Molar mass of Mg = 24g/mol

 Insert the parameters and solve;

        Number of moles  = \frac{321}{24}   = 13.4mol of Mg

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