I will literally force feed you soup if you give me a link. I require help as im bad as h** with chem What does it mean if your percent yield is above 100%, and likewise if its below 100%...? Also how and what kind of errors could be made to get these answers...?

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness