Can someone please answer this I’ll give you 10 points!!

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

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