you have a 1 in 10000 solution of adrenaline( MWt 183.2) a) how many ml are...
500 mL of a 1 in 10,000 solution of adrenaline is required. How many millilitres of a solution containing 0.7 mg/mL of adrenaline would be needed? I was able to come up with 71.42 but it is not the actual answer. The correct answer is 71 ml Could you please tell me where I went wrong with my calculations? solving for C1xV1= C2XV2 0.1 X 500ml= (ml) X 0.7 solving for V2 = 71.42
17) If you have 250 mL of a 3.0 M solution, how many moles of solute if that? If the solute is glucose (C¬¬6H12O6) how many grams of solute do you have?
Show all work 1. How many ml of a 0.2 M NaOH solution are required to bring the pH of 20 ml of a 0.4 M HCI solution to 7.0? How many ml of a 0.2 M NaOH solution are required to bring the pll of 20 ml of a 0.4 M H2SO4 solution to 7.0? 2. Answer the following questions: i) Draw a tripeptide having R groups consisting of methyl, hydroxyl, and phenol groups. ii) When a protein is...
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1 L of 5% w/v acetic acid? 3. How many ml of concentrated HNOs are required to prepare 2L of 0.15N HNOs? 4. How many milliliters of a stock solution of 20% w/v NaOH are required to prepare 800 ml of a 2.5% w/v solution? 5. Suppose that you start with a 5X solution A and you want a final volume of 10 microliters of...
You have 0.9% of a saline solution and you give a patient 350 mL. How many moles of Na+ did you give them?
1. How many moles of potassium hydroxide would have to be added to 150 mL of a 0.399 M hypochlorous acid solution, in order to prepare a buffer with a pH of 7.170? ______ Moles 2. An aqueous solution contains 0.308 M hydrofluoric acid. How many mL of 0.220 M potassium hydroxide would have to be added to 125 mL of this solution in order to prepare a buffer with a pH of 3.240? _____ mL
A solution is labeled "(2.300x10^-1) M KCl". If you measure (7.60x10^2) mL of this solution, how many moles of KCl would you have? show work
1. How would you prepare 125 ml of a 10% (v/v) solution of acetic acid in H2O? 2. How would you prepare 60 ml of a 5% (W/V) NaCl solution in H20? 3. How would you prepare 3 ml of 82% solution A and 18% solution B? 4. 5 ml of a 2.0 mg/ml protein solution contains mg protein. a. If 1.0 ug/ml of pigment X shows an absorbance of 0.059 at 370nm, then what is the concentration of a...
•How many N atoms would be present in 0.378 moles of N2O? •2. If you have 4.55 x 1016 NO2 molecules, how many moles would you have? •3. How many grams would you need in order to have 0.885 moles of CuCO3? •4. If you have a 15.0 g sample of PF5, how many PF5 molecules would be in your sample? •5. If you have 3.14 x 1019 FeCl2 molecules, how many milligrams would you have? •6. What is the...
mg/mL concentrations 29 You have a 5 mL ampoule of dopexamine 1%. How many milligrams of dopexamine are there in the ampoule?