Saline (salt) solution is 0.9% by mass which is similar to tears, blood, and other body fluids. Which of the following could be the recipe used in commercial saline solutions?

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?

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

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3