experiment 6 isolation of naproxen

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

Subparts 4-6

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

Read the following burette. Burette reading =

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

A. FERMENTATION OF CANE SUGAR1. In a 500 mL Florence flask, place 50 gms of brown cane sugar and 1 gram ofdisodium phosphate.2. Dissolve 1 teaspoon of yeast in 15 mL of water. Add this to the sugar in the flasktogether with 150 mL water. Stir until the sugar is dissolved.3. Close the flask with a rubber stopper provided with a delivery tube so that theevolved gas will bubble through a solution of clear limewater.4. HAVE THE SET – UP CHECKED BY YOUR INSTRUCTOR.5. Keep the set – up inside the locker for 5 – 6 days at room temperature.Fermentation Set – up: ________________________________Write the equation for the hydrolysis of cane sugar _____________________________Write the equation for the fermentation of the simple sugars to alcohol __________6. At the end of the fermentation period, what is formed in the flask containinglimewater? _________________________________________________________________Write the equation for its formation ____________________________________________ C.…

8 - 14 please

I need help with this question

Mass of NaCl- 2.0139g

Based on this. What was the percentage error in the percentage of water in the sample, compared to pure MgSO4•7H2O?

8. Read the following burette. Burette reading %3D 14 15

I need help calculating and setting up questions 4 or 5.   thank you for your help!

Multiple choice. Please check my answers from 5-9 if they are correct. Thanks!

Subpart 1-3 this is not a graded question.

Subpart 4-5

An 8 mL volumetric pipet is used to collect a sample from a 0.2015 M solution of NaOH. a. Estimate the uncertainties in volume and concentration. b. Calculate the moles of NaOH in the sample. c. Use error propagation to find the uncertainty in moles of NaOH.

During dilution process, what do you do if you add a bit too much solvent when filling the volumetric flask to the mark? O Calculate the equivalent amount of salt and add that to the solution O Remove the excess content of the flask until the volume matches the calibration mark O Start over, the solution cannot be saved OUse a distillation unit to evaporate the excess solvent

You have run analysis on an unknown acetaminophen sample. Your results showed the concentration of acetaminophen in the unknown was 35.9%. The actual concentration of acetaminophen in the unknown was 49.0%. What is the error % for this analysis? Answer to 1 decimal place.

Differentiate powder from granules? Make it in table form.

c. (- s) d. (_________3) Yoh OH Cl₂/H₂O TSCI Nal

Weigh out accurately 9.99 g of copper(II) sulfate pentahydrate (CuSO4·5H2O) by taring using a clean and dry empty 250-ml beaker. 2. Add tap water to the beaker to reach the 50-mL mark on the side of the beaker. 3. Dissolve all the crystals of CuSO4·5H2O in the water using a clean glass rod for stirring. 4. Then using a glass funnel transfer all the blue solution to a 100-mL volumetric flask. Rinse the beaker with about 10 mL of water and transfer the solution to the volumetric flask. Repeat the rinsing of the beaker with another 10 mL of water and transfer the solution to the volumetric flask. This is called quantitative transfer of the solution. 5. Then add enough water to reach the calibration mark of the volumetric flask. (You will need to use a dropper to add the last few drops of water to ensure the meniscus is on the calibration mark). Close the volumetric flask with a stopper and mix the solution well (so that it is homogeneous). 6. You have now prepared a standard solution (or…

2. What total dilution would you need to produce a 2 mM sample from a 100 mM stock solution?

2. The goal behind suction filtration is to remove soluble impurities that are on the surface of the crystals. Therefore, why can't you simply use suction filtration instead of recrystallization to purify an impure solid?

Can I get detailed explanation for this table , mentioning the apparatus and when’s the timer is started ? What happens next

M 11

• Stock solution: 1000 mg/L Target sample concentrations: 50-400 mg/L • Create a 5-point standard dilution to cover the test • If each test only needs 10 mL, make plans to make the dilution so you have 20 mL of each concentration. ·

6. Explain the reason why a laboratory analyst should not return excess or unused chemicals back in their respective reagent bottles.