Answer: The correct answer is option 2.
Explanation:
[tex]\text{moles of compound}=\frac{\text{Mass of the compound}}{\text{Molar mass of the compound}}[/tex]
[tex]Molarity=\frac{\text{Mass of the solute}}{\text{Molar mass of the solute}\times \text{Volume of the solution in Liters}}}[/tex]
Josh prepares a solution by mixing sodium nitrate and water that is sodium nitrate is a compound which is dissolved in water(solvent) as solute.
Solution : Sodium Nitrate + water
[tex]Molarity=\frac{\text{Mass of the}NaNO_3}{\text{Molar mass of the}NaNO_3\times \text{Volume of the solution in Liters}}}[/tex]
Josh should calculate the moles of sodium nitrate, because it is the solute.
