Calculate the quantity (mL) of glycerin needed to prepare 250 mL of the following ophthalmic solution. Report your answer to 2 decimal places. DO NOT include units. Erythromycin lactobionate 500 mg Dexamethasone sodiumhosphate 100 mg Glycerin Sterile water for injection, ad 2.5 mL 100 mL

The ubiquitous single-cell yeast (S. cerevisiae) is roughly spherical with a “typical” diameter of 5 μm. Let’s make a rough approximation of how many water molecules are in a yeast cell.a) What is the molar volume of liquid water? You may assume dH2O = 1.00 g/mlb) What is the volume occupied by a single water molecule?c) Approximately how many molecules of water are in a “typical” yeast cell?Assume the cell is composed completely of pure water with density equal to 1.00 g/mL (a more realistic estimate is ~70% water content by volume, but don’t worry about this).

Given that the solubility of salicylic acid at room temperature is 0.2 g/100 mL of water? How much water should be used to dissolve 100 mg of impure salicylic acid. Consider the impurity to be an insoluble solid. Group of answer choices 100 mL 500 mL 200 mL 50 mL

Calculate the salinity (as g/kg NaCl) of a table salt solution with density of 1.0513 g/L.