The molecular weight of NaCl is 58.44 grams/mole. If you had a 1.0 molar solution (1.0 M), you would have to put 58.44 g of salt in 1.0 liter of solution. How many moles of NaCl would you have in 10 0 mL of this solution

0.1 mole in 100 mL of the solution

0.01 mole in 10.0 mL of the solution.

Explanation:

Recall that: mole = mass/molar mass

Also, mole = molarity x volume

For a solution of NaCl of 1.0 molar concentration, the number of moles of NaCl in 100 mL of solution would be:

mole = molarity x volume = 1.0 x 100/1000

                              = 0.1 mole

Assuming the volume is 10.0 mL instead of 100 mL, the mole becomes:

           1.0 x 10/1000 = 0.01 mole

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