we know that
Since, we have to find 1 foot^2
so, we will take square both sides
so, we can see that it is not equal to 12 inch^2
that's why is not true
it would be 1 and half hours if it is split equally.
The important clue from the problem, would be (w/v). This would indicate that the percent has units of weight per volume. We calculate as follows:
Grams solute = .30 g solute / mL solution (450 mL) = 135 g of solute.
Hope this answers the question. Have a nice day.