An adhesive dealer receives an order for 3000 lb of an adhesive solution containing 13% polymer by weight. On hand are 500 lb of 10% solution and very large quantities of 20% solution and pure solvent. Calculate the weight of each that must be blended together to fill this order. Use all of the 10% solution.

500 lb of 10% solution1700 lb of 20% solution800 lb of pure solvent

Explanation:

The mass of polymer in the order recieved is:

3000 lb * 13/100 = 390 lb

The mass of polymer in the 10% solution is:

500 lb * 10/100 = 50 lb

So to solve this problem, we need to add (390-50) 340 lb of polymer that comes from the 20% solution.

We calculate the mass of the 20% solution that would contain 340 lb of polymer:

340 lb * 100/20 = 1700 lb

So far, in total we have a solution that weighs (1700+500) 2200 lb and contains 390 lb of polymer.

Thus, in order to reach the required mass of solution (and percentage of polymer by weight), we add (3000-2200) 800 lb of pure solvent.

The correct answer is option D. i.e.All states of matter show random motion of particles.ding to the kinetic theory

According to the kinectic theory of matter, all the particles show random motion at the room temperature. Decreasing the temperature to absolute zero temperature i.e. 0 K will cease the motion of particles.