chemistry
posted by Eric GReenblatt on .
the density at 20 degrees celcius of a .258m solution of glucose in water is 1.0173 g/ml, and the molar mass of glucose is 180.2 g/mol. What is the MOLARITY of the solution?

Molarity=molessolute/literssolution.
Assume 1 liter.
1 kg of solvent.
moles solute=.258
Mass of soluttion=1kg+.258*molmassglucose
volume of solution=masssolutioin/density. 
Please never post your real name.

can you explain a little more, im really lost

you know moles of solute per 1kg solvent, that was given. Then, you need to find the volume of the solution with 1kg solvent. You do that by adding the mass of the solute, then dividing the mass by the density. That gives you the volume of solution.
YOu can now calculate molarity.