Question

You dissolved the 19 g of sugar in 50 mL (0.050 kg) of distilled water. Calculate the molarity of the solution you mixed in?

Answer 1

First we calculate the number of moles of sugar (which I assume is sucrose).

number of moles = mass / molecular weight

number of moles of sugar = 19 / 342 = 0.055 moles

Now we may calculate the molarity of the solution.

molarity = number of moles / solution volume (L)

molarity = 0.055 / 0.05 = 1.1 M