How many liters of a 7.40 MKNO3 solution can be prepared from 58.9 g of KNO3?

Question

Express your answer with the appropriate units.

Answer 1

First calculate the molar mass of KNO₃

K: 39.098

N: 14.007

O: 3*15.999 = 47.997

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101.102 g/mol

Starting with the 58.9 g of KNO3, multiply by 1 over the molar mass and then multiply by 1 over the molarity like this:

Cancelling units like this and multiplying/dividing the numbers gives us: