A patient with an uncomplicated lower respiratory infection is to receive 125 mg of amoxicillin. The pharmacy supplies an oral suspension with 125. mg of amoxicillin per 5 mL. How many mL of the suspension should be given to the patient? Round your answer to the nearest mL. mL X S

1a. Medical saline typically consists of 4.50 g of NaCl in 500.0 mL of solution. What is the molarity of this solution? What is the molality of this solution? (Use the density of water = 1 g/mL; for this question, since the concentration is dilute you may assume that the added NaCl does not result in a change in volume when it is added to water.) Do your answers make sense? Would either of these values potentially depend on temperature? 1b. Stomach acid is essentially a solution of hydrochloric acid (HCl). When first secreted, stomach acid has a concentration of roughly 0.160 M HCl. How many moles of HCl are present in 50.0 mL of stomach acid? 1c. If 5.0 mL of saline is introduced to 15 mL of stomach acid. What is the mole fraction of NaCl? What is the mole fraction of HCl? (In your calculations, use the molarities from parts (a) and (b) above).

A chemistry student needs 75.00 g of acetyl bromide for an experiment. She has available 150. g of a 15.9% w/w solution of acetyl bromide in benzene. Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to 3 significant digits. No х10 solution

Determine the mass of NaCl needed to make the following solution: 2.7 % NaCl in a total volume of 146 mL Give your answer in units of grams, rounded to two places after the decimal place