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Mon 4:35 PM nnections | Un X * Student Employment | Car X Illinois State University : H X Mind Tap - Cengage Learn X G If a sample of lithium con index.html?deploymentld%3D55750828934189288909969212&elSBN=9781305657571&nbld%3D2199898&snapshotld%3219989. * DTAP Q Search this Use the References to access important values if needed for this question. If a sample of lithium contains 2.50x10 atoms of lithium-7 and 2.00×10³ atoms of lithium-6, what is the percentage of lithium-6 atoms in the sample? Submit Answer 5 question attempts remaining Next Autosaved at 4:32 PM Back

A common alkyne starting material is shown below. Predict the major product or missing reagent to complete each reaction. Ignore inorganic byproducts. + esc CI CI ! F1 143,176 @ F2 # 3 31, 80 F3 Select to Draw HCI (1 equiv) DEC 6 $ 4 Q F4 % 5 tv NA 9 F5 A 6 C F6 & 7 A B с D F7 * 8 F8 Cla (1 equiv) Cla (2 equiv) HCI (excess) NaCl (2 equiv) THF Done 9 F9 - . F10 0 F11 27 F12

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1.    In your pharmacy you have a balance with a sensitive requirement of 7mg; 10,25,50 and 100ml graduated cylinder; and 1 oz apothecary and 4-ounce apothecary conical cylinder. What is the minimum measurable volume in ml using the graduated cylinder?a.    5b.    20c.    1d.    2

Which of the following molecules are antihistamines? Check all that apply. ► View Available Hint(s) U 0 H-N L CH,CH,NH,* But CH–O–CH,CH,−N CH,CH,NHNH, H 4

Aktiv Chemistry → C < + X b Success Confirmation of QX M Your Chemistry answer is rex b Answered: How many mL o x b Answered: A student combi x app.101edu.co Time's Up! A 0.660 M solution of KCI needs to be prepared through dilution. A 2.00 M stock solution will be added to a 0.250 L volumetric flask and then water will be added to the 0.250 L mark. Determine the volume (in mL) of the 2.00 M stock solution of KCI needed to produce this solution. 1 4 7 +/- New Tab 2 5 8 mL 3 6 9 G 0 x + Submit X C x 100

I don’t understand these two questions.(66 and 67)

How would you simplify the following expression?