A 2.5L solution of hand sanitizer has a density of 1.25g/mL, what is the mass of the solution in grams?

313 g

Explanation:

The formula for density is in Litters (L).

Given that the density is 1.25 and that the solution is 2.5

You first have to plug in what is given into the density formula like so but note that the answer is in milliliters not Litters so you have to convert in milliliters like so or Which equals 2,500mL next you do simple math like so

or the Mass

 but that not the answer because you need to round to 3 significant figure so your actual answer is  

a:

by the combination of an unlimited number of elements