The percent of the mass of a solute in the saturated solution of the KClO3 at a temperature of 60°C is 21.8%
A mass of the solute is equal to the mass of the solute that is divided by the molar mass of the solute. The mass is measured in grams and is defined as g/mol. The potassium chlorate is KClO3 has a mass of 122.55 g/mol. Hence at the temperature of 60 degrees C, the saturated solution would contain about 21.85 of the solute.
Hence the option 3 is correct.
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