How many moles are present in 450 grams of sodium phosphide, Na3PNa3P? a. 450 moles
Selected:b. 99.9 moles
c. 44,995 moles
d. 4.50 moles

4.5moles

Explanation:

Given parameters:

Mass of Na₃P = ?

Unknown:

Number of moles  = ?

Solution;

The number of moles in a given substance can be derived from the expression below;

    Number of moles =  

Molar mass of  Na₃P   = 3(23) + 31 = 100g/mol

   Number of moles  =   = 4.5moles

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