20 round 2

10. Explain the step in filtration technique.

Plz answer correctly in 20 minutes plz it's very urgent

#45 show work

Which atom is the most nucleophilic? C

5. This question has two parts a. and b. a. Assuming 100% yield, how much hexynyl lithium (in mmol) is produced from the reaction of LiHMDS with 1- hexyne? (mmol) b. Insert an image (.jpeg, png, .heic) showing all of your calculations for the moles of hexynyl lithium above. Note: Click on the image icon in the box below to upload/attach an image file. W

Density of object analysis Dlameter (cm) Helght (cm) Mass (g) Volume (cm) Density (g/cm) 1.17 2.39 3.612 Object A Object B 1.19 2.10 3.306 Object C 1.15 1.63 2.367 Object D 1.14 1.72 2.471 Table view List view Density statistics Density (g/cm) Average Standard deviation Coefficient of variation (CV) True density 1.410 Absolute error % error

What is the “taring” function of the digital electronic balance?     Why do you need to “tare” the digital balance before use?

In the glucose molecule, why is the oxygen at carbon 5 the one that reacts with carbon 1 when there is an additional carbon at the end of the chain, carbon 6? t Predictions: On a. Due to the chirality of the last carbon, carbon 6 b. Because carbon 5 is the last chiral carbon 4 C. Because the oxygen at carbon 5 is in alpha position just like the oxygen at carbon 1 Accessibility: Good to go O 8: 14 101 f5 % 5 f6 A 17 40 & 7 18 Ö 7 W f9 8 8 f10 9 19 11 F ) O n f12 81°F Cla

dy Exam in Progress Q Search Choose the correct reagents to complete the following synthesis problem. To preview image click here 1. Correct reagent(s) for Select 2. Correct reagent(s) for II Select] 3. Correct reagent(s) for III Select] S HINNOWS > % > 24 ** 1-