Achemical company makes up batches of copper sulfate solution by adding 250 kg of copper sulfate powder to 1000 liters of water. a laboratory chemist wants to make a solution of identical concentration, but only needs 350 ml (0.35 liters) of solution. how much copper sulfate powder should the chemist add to the water?

87.5 grams.

Step-by-step explanation:

Concentration of the company's solution  is  250 kg / 1000 liters

= 250 g / liter.  (dividing both quantities by 1000).

So the chemist needs  250 * 0.35

= 87.5 g.

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )