An ac system has had 0.5 lbs of r-22 refrigerant added, what will this cause

The more refrigerator you have the colder it get so bout like 45 degrees Celsius

The statement is correct because if there is a bunch of noise around you and you are focusing on the noise you will not comprehend your questions and lessons nor will you be able to get the proportion information you need and you will likely spend many more hours on work than normal than if you could ignore the sound

Hard work and dedication