Biochem help?

4.    What is the concentration in µg ml-1 of a solution of glycine of 23 g litre-1? (2 marks)
(Mol. wt of glycine = 75.07)

I need help answering a few questions

That's a joke, right? 23,000 µg / ml. You don't even need the molecular weight, just elementary school math skills.