Question

question 3
1 pts

1. what is the mass of 4.76 mol of na3po4?

333.02 g
14.70 g
780.64 g
0.029 g

Explanation:

Step1: Calculate molar mass of \(Na_3PO_4\)

Molar mass of \(Na\) is \(22.99\ g/mol\), \(P\) is \(30.97\ g/mol\), \(O\) is \(16.00\ g/mol\).
Molar mass of \(Na_3PO_4=3\times22.99 + 30.97+4\times16.00\)
\(=68.97+30.97 + 64.00\)
\(=163.94\ g/mol\)

Step2: Calculate mass using formula \(m=n\times M\)

Given \(n = 4.76\ mol\), \(M=163.94\ g/mol\)
\(m=4.76\times163.94\)
\(m = 780.64\ g\)

Answer:

780.64 g