You want 0.02 M. How many moles do you need? That will be M x L = 0.02M x 0.100L = 0.002 moles.
Then moles = grams/molar mass
You know mole and molar mass, solve for grams.
how many grams of sucrose are needed to make 100 ml of a 10^-2 Molarity sucrose solution?
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