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Test Bank, Question 06.113 If you begin with 25 mL of 0.9% (w/v) LiCl and add...
Test Bank, Question 06.114 X Incorrect A 60. mL solution contains 210 ppm of iron. How...
Test Bank, Question 06.114 X Incorrect A 60. mL solution contains 210 ppm of iron. How many milliliters of water must be added to dilute this solution to a final concentration of 30. ppm? 11420 Use correct number of significant digits; the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work
Add 1.5 mL of the 1.0%(v/v) ethanol (mL) to 8.5 mL of deionized water. The ethanol...
Add 1.5 mL of the 1.0%(v/v) ethanol (mL) to 8.5 mL of deionized water. The ethanol standard in the test tube will have a final concentration of ____ %(v/v) ethanol? Add 1.0 mL of wine that has been diluted by a factor of 100, to a test tube and add 20 drops of sulfuric acid to it. The concentration of the diluted wine sample was found to be 0.23%(v/v) ethanol. Using the procedure stated, what was the original concentration of...
Report your answer is molarity, with the correct significant digits, but no units. Blank 1: 0.9...
Report your answer is molarity, with the correct significant digits, but no units. Blank 1: 0.9 Question 8 (2 points) If 10.00 mL of the diluted solution from the last question (Q7) is further diluted with water in a volumetric flask to a final volume of M. 50.00 mL, the concentration of the final solution is Report your answer in molarity, with the correct significant digits, but no units. Do not use scientific notation Schoology cannor understand it. Blank 1:1...
If you add 50 mL of water to 30 mL of a 4.0 % solution. What...
If you add 50 mL of water to 30 mL of a 4.0 % solution. What will be the concentration of the diluted solution?
2. What is the volume of sterile purified water and 0.9% w/v sodium chloride solution needed to prepare 30 mL of...
2. What is the volume of sterile purified water and 0.9% w/v sodium chloride solution needed to prepare 30 mL of a 2% w/v solution of tobramycin for ophthalmic use? • Step 1: Calculate the tonic contribution provided by the tobramycin (FDP 1% tobramycin = 0.04°C) Step 2: Calculate the amount of NaCl necessary to render this product isotonic Step 3: Your source of NaCl is 0.9% NaCl. What volume of the 0.9% NaCl solution will yield the calculated amount...
3. If you pipet 10.00 mL of the solution you made in Question #2 into a...
3. If you pipet 10.00 mL of the solution you made in Question #2 into a test tube and then you pipet 10.00 mL of deionized water into the same tube. After stirring, what is the Allura Red concentration of the new solution you've made? Hint: use at least 2 extra significant figures from your answer to question #2 to calculate this answer to avoid rounding errors. Your final answer willl be reported to the correct number of sf. This...
dilution If I add 25 mL of water to 125 mL of a 0.15 M NaOH...
dilution
If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? (Your answer should be written as 0.XXX with no units) Question 2 0.2 pts If I add water to 100 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be? (Your answer should be written as 0XXX with no units) Question...
The concentration of a diluted "wine" sample was found to be 0.32 %(v/v) ethanol. Assuming the...
The concentration of a diluted
"wine" sample was found to be 0.32 %(v/v) ethanol. Assuming the
dilution was done as described in Part B of the procedure for this
lab, what was the original concentration of ethanol in the "wine"?
Enter your answer with 2 significant figures.
B. Preparation of Unknown Samples 1. Label two small test tubes "wine" and "breath”. 2. Use a disposable pipette, add 1.0 mL (25 drops) of “wine” solution to the wine test tube. a....
QUESTION 18 When you dilute 0.15L of a 1.92M solution of LiCl to 2L, what is...
QUESTION 18 When you dilute 0.15L of a 1.92M solution of LiCl to 2L, what is the final molar concentration of the solution? • Answer to 2 decimal places • Read about significant figures and rounding in the Helpful Resources page! • Do not include units when reporting your answer • Use standard notation or scientific notation as accepted by blackboard • e.g. 0.001 or 1-3, not 1 x 10^-3 QUESTION 19 When 0.054L of a solution containing 1.48M BaF2...
5. What is the % w/v of a solution that has 250 mg of penicillin V...
5. What is the % w/v of a solution that has 250 mg of penicillin V dissolved in a total volume of 100 ml of distilled water ? 6. Using the formula CV=C1V1 given a total volume of 300ml of a 10% w/v of a bleach solution how many ml of this stock solution is need to make a 1.0% solution ? 7. A total of 125 ml of a 10% solution is diluted to...
Test Bank, Question 06.114 X Incorrect A 60. mL solution contains 210 ppm of iron. How many milliliters of water must be added to dilute this solution to a final concentration of 30. ppm? 11420 Use correct number of significant digits; the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work
Report your answer is molarity, with the correct significant digits, but no units. Blank 1: 0.9 Question 8 (2 points) If 10.00 mL of the diluted solution from the last question (Q7) is further diluted with water in a volumetric flask to a final volume of M. 50.00 mL, the concentration of the final solution is Report your answer in molarity, with the correct significant digits, but no units. Do not use scientific notation Schoology cannor understand it. Blank 1:1...
2. What is the volume of sterile purified water and 0.9% w/v sodium chloride solution needed to prepare 30 mL of a 2% w/v solution of tobramycin for ophthalmic use? • Step 1: Calculate the tonic contribution provided by the tobramycin (FDP 1% tobramycin = 0.04°C) Step 2: Calculate the amount of NaCl necessary to render this product isotonic Step 3: Your source of NaCl is 0.9% NaCl. What volume of the 0.9% NaCl solution will yield the calculated amount...
3. If you pipet 10.00 mL of the solution you made in Question #2 into a test tube and then you pipet 10.00 mL of deionized water into the same tube. After stirring, what is the Allura Red concentration of the new solution you've made? Hint: use at least 2 extra significant figures from your answer to question #2 to calculate this answer to avoid rounding errors. Your final answer willl be reported to the correct number of sf. This...
dilution
If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? (Your answer should be written as 0.XXX with no units) Question 2 0.2 pts If I add water to 100 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be? (Your answer should be written as 0XXX with no units) Question...
The concentration of a diluted
"wine" sample was found to be 0.32 %(v/v) ethanol. Assuming the
dilution was done as described in Part B of the procedure for this
lab, what was the original concentration of ethanol in the "wine"?
Enter your answer with 2 significant figures.
B. Preparation of Unknown Samples 1. Label two small test tubes "wine" and "breath”. 2. Use a disposable pipette, add 1.0 mL (25 drops) of “wine” solution to the wine test tube. a....
QUESTION 18 When you dilute 0.15L of a 1.92M solution of LiCl to 2L, what is the final molar concentration of the solution? • Answer to 2 decimal places • Read about significant figures and rounding in the Helpful Resources page! • Do not include units when reporting your answer • Use standard notation or scientific notation as accepted by blackboard • e.g. 0.001 or 1-3, not 1 x 10^-3 QUESTION 19 When 0.054L of a solution containing 1.48M BaF2...
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