Answer:
Number of moles = 0.36 moles.
Explanation:
Given the following data;
Mass of KNO3 = 36.4g
To find the number of moles;
[tex] Number \; of \; moles = \frac {mass}{molar mass} [/tex] .....equation 1.
Molar mass of KNO3;
Molecular weight of potassium, K = 39g/mol.
Molecular weight of nitrogen, N = 14g/mol.
Molecular weight of oxygen, O3 = 16*3 = 48g/mol.
Therefore, molar mass of KNO3 = 39 + 14 + 48 = 101g/mol
Substituting the values into eqn 1, we have;
[tex] Number \; of \; moles = \frac {36.4}{101} [/tex]
Number of moles = 0.36 moles.
