The one i selected is wrong!! pls help:(( only answer if ur right

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Which of these best describes an ionic bond?

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg