8. A chemist wants to mix an acid solution that is 40% concentrated to a solution which is 20% acid. How many
liters of each solution must he mix if he wants to have a
mixture of 10 liters with 35% concentration?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft