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
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 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?
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
7. You make 1 Liter of an aqueous solution containing 9.20 ml of 57.8 mM acetic acid and 56.2 mg of sodium acetate (MW = 82.0 g/mole). a. How many moles of acetic acid did you add? b. How many moles of sodium acetate did you add? c. What is the appropriate formula for calculating the pH of the above solution? d. What is the pH of the above solution? Is it acidic or basic? Slightly or strongly so? (Use...
1- a patient is receiving vancomycin 1.25 g every 8 hours in D5w. How many kilocalories will the patient receive in 24 hours? 2- if 60 g of 1% hydrocortisone is mixed with 80 g of 2.5% hydrocortisone, what is the percent W/W of hydrocortisone in the final mixture? 3 - if 3 teaspoonsful of dexamethasone intensol (1mg/ml) is diluted to 120ml with sterile water. What is the strength of the final solution in mg/ml? Express this result in percent...