Screenshot 2024-03-25 201415

please i really need your help with this

Chemistry Hello! Can you please explain why these answers are wrong? Thank you.

Convert the amount of spiperone in each sample to the concentration in the 1 ml total volume of assay tube. I have calculated amount of 3H spiperone in pmol in each dilution in second picture. To converted concentration in 1 ml total volume of each assay tube do I need to consider dilution factor？

MULTIPLE CHOICE: Choose the letter of the best answer Please answer all questions correctly 1. The standardization of volumetric solution does not require hydrochloric acid. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 2. In the standardization of its volumetric solution, the primary standard is dried to constant weight, which means drying shall be continued until two consecutive weighings do not differ by more than 0.50 mg. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 3. In the standardization of its volumetric solution, potassium iodide was added to A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 4. Starch is the indicator of choice for these procedures because it forms intense blue coloration with the solution. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E. C and D 5. In the standardization of its volumetric solution, the reaction needs to be…

Home Tools Lab Experiment #... x ... +) 玩, 1 | 2 97.4% Record your observations following each reaction including changes in color and state of matter. AGNO3 (Ag*) Pb(NO3)2 (Pb²*) Ca(NO3)2 (Ca²+) а e i NazCO3 Light orange solid white, cloudy solid white, cloudy, solid (СО2) b NaOH f dark brown solid stay clear, liquid white, cloudy solid (OH) g k NazSO4 stay clear, liquid white, cloudy, solid white, cloudy, solid (SO?) d NaCl 1 white, cloudy solid white, cloudy solid stay clear, liquid (CF) .... Remember to complete and submit this table to your instructor before the end of the class session.

C. Biosensors are considered point-of-care analytical devices that can make diagnoses faster. One of the most widely used commercially is glucose biosensors (amperometric type). The schematic diagram of the first-generation glucose biosensor is shown below. Explain the theory behind this biosensor and how you generate the measurement results. Glucose biosensors (amperometric type) D-glucose ENZYME (OX.) Oxygen D-gluconolactone ENZYME (Red.) Hydrogen peroxide Platinum electrode

Complete the table by computing HCl used, Normality of HCl, and Avergae normality of HCl. The givens are provided below. Kindly also include complete solution.

SERIAL DILUTION: PROBLEM SOLVING.   Set up five (5) tubes on the test tube rack and label them 1-5. Place 0.9 ml of saline to tube #1 and 0.5 ml of saline to tubes # 2-5. Add 0.1 ml of patient's serum to tube #1, mix and transfer 0.5 ml of the mixture to tube # 2. Then, mix and transfer 0.5 ml of the mixture to tube # 3. Mix and continue dilutions through tube # 5. Discard 0.5 ml from tube # 5. Finally, add 0.5 ml of the reagent to each tube # 1-5. Compute for the initial dilution of tube #1 and final dilution of tube #5. Show your computation and encircle your final answer.

Answer questions 1 and 2 according to the data given. Dater Weight of cream i: 326 kỳ. Table shows some data obtained directly from Lactascan instrument. Fat % SNF % Lacto- density 27.32 30.23 Raw milk 4.15 7.97 Skim milk 0.08 8.26 Q1. Calculate fat percent of creamn A) 46 B) 28 (C) 3D D) 0.046 آدرما 396 100 x Q2. Calculate efficiency of the cream separator. A) 100% B98% C) 97% D) 96% E) 87.2% amount 2500 L E) 0.28

Please give the full calculation + explanation for each step.

7-10 subparts

Using the linear regression equation on the previous question, what is the concentration of the diluted KMnO4 solution?     216.15 mg/L     316.15 mg/L     416.15 mg/L     300.20 mg/L

EXPERIMENT :Estimation of Dissolved Oxygen I want Result & Analysis for this experiment

Based on the data given answer questions. 1,3, and 5 please ?? Question 2 is already answered to solved 1 and 3 1. Based on your three trials, discuss the precision of your data 2. The actual concentration of the unknown is 0.200 M. (Check with instructor to ensure that this value is accurate.) Calculate the percent error based on the average molarity of your three trials. Answer: Actual Molarity= 0.200M Mcalculated = 0.1755M % error = ( [actual - calculated value]/actual ) *100 Putting values; = ((0.200 - 0.1755)/0.200 )*100 = 12.25% 3. Based on your answer to (2), discuss the accuracy of your data. 5. 80.0 mL of 0.30 M NaOH and 80.0 mL of 0.30 M HCl are mixed together. What is the approximate pH of the solution —acidic, basic, or neutral? Explain.

$ F4 An aqueous solution of 2.87 M hydrochloric acid, HCl, has a density of 1.05 g/mL. The percent by mass of HCl in the solution is %. Submit Answer % 5 T G F5 Retry Entire Group 9 more group attempts remaining 6 Cengage Learning | Cengage Technical Support Y H [Review Topics] [References] Use the References to access important values if needed for this question. MacBook Air F6 & 7 gilinent-take F7 8 00 1 DII FB K ( 9 F9 0 L ) O A F10 P Chapter Previous + 11 X Next ☐ Save and Exit OWLY S deles

I need help constructing graph I m not sure where to put values On the graph paper plot a graph of your reaction rates vs. concentration by using vertical scale or Y-axis representing reaction rate and a horizontal scale or X-axis representing mls of solution #1(KIO3).

Steps would be appreciated!

LIMIT TEST (IMPURITIES - BIOLOGICAL) Instructions: Note the color change of each of the samples by writing blue or pink accordingly. Then give inference whether the sample is contaminated or not contaminated upon observation. Answer the highlighted numbers.     BLANK  (Sterile distilled water) Reference Sugar Solution Sample A Sample B REPLICATE 1 BLUE BLUE PINK PINK REPLICATE 2 BLUE PINK BLUE PINK REPLICATE 3 BLUE PINK PINK PINK INFERENCE NOT CONTAMINATED CONTAMINATED 1 2   1. 2. 3. Which of the two samples is relatively clean of biological impurities? 4. Given the result in limit test as an analyst, what will be the final conclusion to this? Write whether rejected or accepted for each sample.  (see attached photo)

Answer number 9

Concentration (mg/ml) Time (min) 8.5 0.5 6.8 5.4 1.5 4.0 2 3.2 2.5 2.5 3 What will be the slope of the line using the given first and second values? What will be the y-intercept, still using the given first and second values? Completely state the equation of the line. nlcot olN5

Two different laboratories within a company further studied the morantel recovery percentage in shrimp when spiking with 10 ug/kg. The results from both labs are presented below. Shrimp Sample Laboratory 1 (ug/kg) Laboratory 2 (ug/kg) 108.82 113.36 2 101.59 107.47 3 102.17 109.01 a. A 4th shrimp sample was analyzed for morantel recovery percentage using laboratory 1. The result was 99.4%, can any of the data be thrown out using the Q and/or Tn test using the 95th percentile? b. Is there a statistical difference (90th percentile) between the two laboratories results in the study?

help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

Arrange the values according to magnitude. Greatest     Least Answer Bank 7.1×10−6 3.3×10−2 52000 9.0×10−6 2.2×105

Data of candy (trial 1) Mass of candy: 6.1115g Concentration of NaOH (M): 0.09639 Volume of NaOH Solution used: 17.2 mL Data of candy (trial 2) Mass of candy: 6.5320g Concentration of NaOH (M): 0.09639 Volume of NaOH Solution used: 19.94 mL

Multiple choice. Please check my asnwers from numbers 5-9 if they are correct. Thank you!

STARTING AMOUNT esc C X C 2 F2 W # 3 1000 F3 ADD FACTOR x( ) $ 4 1 97.9 FS de in % 5 2 Convert 23.4 kJ to calories 2.34 x 104 t 4184 kcal 6 P 0.001 J 4.184 COMEC DOLL ANSWER & 7 9.79 × 104 cal 00 8 RESET FO 2 23.4 ( 5590 A FIT 120 Jan 21 del +

After performing Part A of the experiment, a student obtained the following concentrations for sodium hydroxide. Calculate the average concentration. Report your answer with four places after the decimal. Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trial 6 0.989 0.975 0.976 1.081 1.062 0.949