How many grams are there in a 29 grams of a 0.285m solution of 385ml

266.055 g

Explanation:

We have the following data related to this unknown substance:

are the grams of substance

is the molarity of the substance, given by the following formula:

(1)

In this case the volume of solution is

Finding the moles of solute:

(2)

(3)

Now we have to convert this to grams by the following relation:

(4)

Finding :

(5)

(6)