Respuesta :
Moles are the ratio of the mass to the molar mass of the substance and is estimated in units mol. The moles of potassium nitrate is 1 mol.
What are moles?
Moles are the mass of the substance in gram to the molar mass of the substance in g/mol. It can be calculated by the formula,
[tex]\rm Moles = \dfrac{Mass}{\text{Molar mass}}[/tex]
The molarity of the solution can be estimated by the,
[tex]\rm Molarity = \rm \dfrac{Moles \times 1000}{\text{Volume in L}}[/tex]
The molar concentration of the potassium nitrate solution is 2 M and the volume of the solution is 500 mL.
Substituting values in the above equation:
[tex]\begin{aligned} \rm 2M &= \rm \dfrac{n \times 1000}{500}\\\\\rm n &= \dfrac{2 \times 500}{1000}\\\\&= 1 \;\rm mol\end{aligned}[/tex]
Therefore, 1 mole of potassium nitrate is present.
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