The molar mass of hydrogen fluoride, HF, is 20.0 g/mol. If 17.0 grams of HF are dissolved in water

to give 200.0 mL of solution, what is the molarity of this solution?

4 answers

mols = grams/molar mass = ?. Then
M = mols/L solution.
i don't know which numbers to plug in where. this is what i was given in my intro to chem class and i am totally lost.
would it be 17/20.0=?
4.25