Respuesta :
Answer: C. 146 g
Explanation:
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{ mass}}{\text{Molar mass}}[/tex]
Thus [tex]Mass=\text{Number of moles}\times {\text{Molar mass}}[/tex]
For sodium nitrate [tex](NaNO_3)[/tex]
moles = 1.72
Molar mass of sodium nitrate [tex](NaNO_3)[/tex]= 85g/mol
Putting values in above equation, we get:
[tex]Mass=1.72moles\times 85g/mol=146g[/tex]
