Troy must keep track of the amount of refrigerant he uses from a 50-pound cylinder to ensure that accurate records are kept. He used 13 pounds on a system for Ms. Jones and 9 pounds on a system for a commercial client. How many pounds should he have left in the cylinder?

Amount of gas still in cylinder = 28 pound

Troy should have 28 pounds left in the cylinder.

Explanation:

So here's what we're given:

Amount of gas in cylinder = 50 pounds

Amount of gas used in Ms. Jones system = 13 pounds

Amount of gas used in client system = 9 pounds

Here's what we need to find:

Amount of gas still in cylinder

Now here's what we need to compute:

Amount of gas still in cylinder = Amount of gas in cylinder - Amount of gas used in Ms. Jones system - Amount of gas used in client system

Amount of gas still in cylinder = 50 - 13 - 9

Amount of gas still in cylinder = 28 pounds

Hope I helped! ☺

answer: 500 wph.

explanation:

answer:

an example of solubility is salt or sugar dissolving in water.

rate as brainliest plz