Molarity is given by,
Molarity = number of moles of solute
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volume of the solution(in liters)
In order to find molarity, you need to find first moles of solute which can be found by,
Number of moles = mass of that substance
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atomic weight of element/molar mass of that compound
Volume of the solution will be provided to you in the question.
Once you know volume of the solution and number of moles, plug these values in above molarity formula.
