Can someone help with this question?

Here are the formula weights for three compounds often used in molecular biology: NaCl, 58.44; Tris base, 121.1; EDTA, 372.2 a) For each of these three compounds, how much solute is required to make 1L of a 1M solution?

2 answers

b) For each of these three compounds, how much solute is required to make 0.5M of a 1L solution?
1M=molesolute/volume
moles solute=1*1=1=1 formula weigh

b. 1/2 formula weight.