You opened up a new 500. ml bottle of robitussintm. the dosage is 1.1 tablespoon (tbs).
how many doses are in the bottle?
1 tsp. = 4.93 ml
3 tsp. = 1 tbs.
b)what is the mass of 35.2 ml of a saline (salt water) solution that has a density of 1.12 g cm−3?

30.73 Doses and 39.42 g

Explanation:

It is necessary to know the conversion factors in that manner change the initial 500 mL to the number of doses as follow:

And the for b. it is such necessary to take in account that 1 mL = 1

35.2 mL * 1.12 = 39.42 g

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.