Question

Calculate the mass of o.1 mole of kno3

Answer 1

The molar mass of KNO3is 101 g/mol. Thus1 mole of KNO3= 101 gTherefore 0.1 mole of KNO3= 0.1 X 101 g = 10.1 g

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Answer 2

Given: 0.1 moles of $KNO_3$.

To find: We have to find the mass.

Solution:

The compound is $KNO_3$.

The atomic mass of K is 39 and the atomic mass of N is 28.

The atomic mass of oxygen is 16 units.

Thus, the molecular mass of $KNO_3$ is 39+28+16×3=115 units.

One mole of $KNO_3$ has a molecular mass of 115 units.

Thus 0.1 moles of $KNO_3$ has a molecular mass of 115×0.1=11.5 units.

Thus 0.1 moles of $KNO_3$ has a molecular mass of 11.5 units.