How many grams of glucose (180g/mole) would be needed to make 100ml of a 1.5 M solution?
To determine the number of grams of glucose needed, we can use the formula:
(grams of solute) = (molar mass of solute) x (volume of solution) x (molarity)
Let's calculate it step-by-step:
1. Calculate the number of moles using the molarity (M) and volume (V) of the solution:
moles = Molarity x Volume
moles = 1.5 M x 0.1 L
moles = 0.15 moles
2. Now, multiply the number of moles by the molar mass of glucose to obtain the mass in grams:
grams = moles x molar mass
grams = 0.15 moles x 180 g/mole
grams = 27 grams
Therefore, you would need 27 grams of glucose to make a 100 ml solution with a concentration of 1.5 M.