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Question

How are 0.50 mol Na2CO3 and.0.50 M Na2CO3 different?

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Solution

Here 0.50 mol of sodium carbonate refers to the number of moles whereas 0.50 M refers to the molarity of sodium carbonate.

Number of moles = given mass/molar mass
Molarity = No. of moles / volume of solution in L 0.50 mole Na2CO3 indicates 3 x1023molecules ofNa2CO3. While 0.50 MNa2CO3 indicates that3 x10^23molecules ofNa2CO3 are dissolved in 1 L water

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