Question

you have a bottle of dalobase formula weight 178g/mol. want to make 75ml of stock solution that has database concentration of 0.4m how much dagobase do you need to make this solution

Answer 1

To make a 0.4 M solution of dalobase with a volume of 75 mL, we can use the formula:

moles = M x V

where M is the molarity, V is the volume in liters, and moles is the amount of substance in moles.

First, we need to calculate the number of moles of dalobase we need:

moles = 0.4 mol/L x 0.075 L = 0.03 mol

Next, we can use the formula for the number of moles of a substance to calculate the mass of dalobase we need:

moles = mass / formula weight

Rearranging the formula, we get:

mass = moles x formula weight

Substituting the values we have, we get:

mass = 0.03 mol x 178 g/mol = 5.34 g

Therefore, we need 5.34 g of dalobase to make a 0.4 M solution with a volume of 75 mL.