Apharmacist has a prescription for 30 ml of an eye drop that is to contain benzalkonium chloride 1: 750 as a preservative. on the shelf the pharmacist finds 17% benzalkonium chloride. using a dropper that delivers 25 drops/ml, how many drops will be required to prepare this compounded formula? (answer must be numeric; no units or commas; round the final answer to the nearest whole number.)

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.