If the density of methanol is 0.793 kg/L, what is its volume needed for making 2.5 L of its 0.25M solution?

If the density of methanol is 0.793 kg/L, what is its volume needed fo

1.	If the density of methanol is 0.793 kg/L, what is its volume needed for making 2.5 L of its 0.25M solution?
Answer» Molarity = number of mole of solute/volume of SOLVENT in liters 0.25 = number of mole of methanol/2.5 no. of mole of methanol = 0.25×2.5 = 0.625 mole WEIGHT of methanol = no. of mole of methanol×molecular weight of methanol = 0.625×32 = 20 gram weight of methanol = 20/1000 kg volume = weight of methanol/density = (20/1000)/0.793 = 20/793 = 0.025liter