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- 1:39 PM Fri Apr 30 100% AA A testnavclient.psonsvc.net G Cannot MY eCLASS .. B Homepage -. O Schoolnet TestNav Favorites Review ABookmark Gonzalez, Marianna RETAKE S2 Chem Unit 9 Common Unit Assessment / 5 of 10 II Pause O Help - Use the information to answer the following question. Ammonia (NH3) readily dissolves in water to yield a basic solution. NH3 + H20 NH4+ + OH How is this substance classified? O A. Arrhenius Base Exhibits B. Arrhenius Acid C. Bronsted-Lowry Acid D. Bronsted-Lowry Basey= mx+ b Slope () = -4E-09 y-intercept () = 0.4021 and OD= 0.540 , Calculate the concentration (x)ASSAY Calibration solutions Calibration solutions of naproxen in the range 5 – 25 μg/mL were prepared. Sample preparation 20 tablets weighing 12.3819 g were crushed to a fine powder. A portion of the powder (145.4 mg) was shaken with approximately 150 mL of acetic acid (0.05 M) for 5 min and then made up to volume in a 250 mL volumetric flask (stock solution). Approximately 50 mL of the stock solution was filtered and a 25 mL aliquot was diluted to 100 mL in a volumetric flask. 10 mL of the resulting solution was further diluted to 100 mL with acetic acid (0.05 M). Analysis The standards and sample solutions were analyzed by HPLC under the following conditions: Column: octadecylsilyl (ODS), 4.6 mmx150 mm, mobile phase: acetonitrile : 0.05 M acetic acid (85:15), flow rate: 1 ml/min, UV detection at 243 nm. Results: A calibration curve of concentration versus peak area was constructed for the standard solutions and gave the straight-line equation: y = 3555.6x + 85, r = 0.9999 The area…
- Question 13 For the titration of 25.00 mL of 0.1000 M HCI with 0.1000 M NaOH, calculate the pH of the reaction mixture after each of the following total volumes of base have been added to the original solution. (Remember to take into account the change in total volume.) (a) 0.00 mL the tolerance is +/-2% SHOW HINT (b) 10.00 mL the tolerance is +/-2% SHOW HINT (c) 24.90 mL1-36. How many milliliters of 3.00 M H2SO4 are required to react with 4.35 g of solid containing 23.2 wt% Ba(NO3)2 if the reaction is So 2+ BaSO4(s)? Ва 3Hew manygrams of 0.491 wt% aqueeusIP are required to provide a50excess te reaet with 250 m£ef 0,023 6 M Th the reaction TH 4+ by hrдо2 1-38. To entertain children between the ages of 2 and 90, I enjoy popping corks from bottles containing vinegar and baking soda pour about 50 mL of vinegar into a 500-mL plastic bottle. Then I wrap about 5 g of baking soda which is sodium bicarbonate NaHCO3) in one layer of tissue and drop the tissue into the bottle. I place a cork tightly in the mouth of the bottle and step back. The chemical reaction generates CO2(g) that pressurizes the bottle and eventually bursts the cork into the air. Everyone smiles ICH3 Twit OR excess Naoci Tempo
- Titration purity NxVx mEq weight weight of sample (g) x 100 Volume (Weight of sample (g) Nx mEw Weight V = 100 Normality Weight of sample (g) Vx mEw Weight N = 100 mEq Weight mEq Weight % x Weight of sample (g) V xN /100 Weight of sample Nx Vx mEq weight (9)= x 100 %3D % Purity Volume 2 Normality 1 Normality 2 Volume 1udy ||| = OMEASUREMENT AND MATTER One step dosage calculations V A patient recovering from minor surgery 2 days ago has been taking acetaminophen for pain control. During his follow-up visit he shows you his medication: a bottle of orange liquid labeled "acetaminophen oral suspension 160. mg per 5 mL." The patient states he has taken seven 15.0 mL doses since his surgery. What is the total amount of acetaminophen he has received since his surgery? Round your answer to the nearest mg. mg Explanation Check X Q Search پہلے 1/3 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility OWhat is the uncertainty of 125.00 mL using a 25.00 (+/- 0.04) mL volumetric pipet? Type your numeric answer and submit