Which of the following ketones would be the best choice to use for a crossed aldol reaction with butanal? A a. Ketone C b. Ketones B and C work equally well C. Ketone A d. Ketones A and B work equally well e. Ketone B

2. Two structural formulas for C₂H402 were provided in the Introduction for this lab. Draw a third structural formula of C₂H402.

Determine the structures of the missing organic molecules in the following reaction: Y II OH X + H₂O H+ H* OH Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. C X :0 Ś m c+

The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been added to carbon. (The suffix hydrate from the Greek word hydor ("water") means "compound formed by the addition of water.") The actual chemical structure of carbohydrates doesn't look anything like water molecules bonded to carbon atoms (see sketch at right). But it is nevertheless possible to chemically extract all the hydrogen and oxygen from many simple carbohydrates as water, leaving only carbon behind. If you search the Internet for "reaction of sulfuric acid and sugar" you will find some impressive videos of this. Suppose you had  300.g  of ordinary table sugar, which chemists call sucrose, and which has the chemical formula  C12H22O11 . Calculate the maximum mass of water you could theoretically extract. Be sure your answer has a unit symbol, and round it to the correct number of significant digits.

Please don't provide hand writtin solution...

"Waterproof" nylon garments have a coating to prevent water from penetrating the hydrophilic fibers. The structure of a common nylon is shown below. H. H. Nylon-6,6 1st attempt See Periodic Table O See Hint Which structural features/groups in nylon-6,6 make it hydrophilic? Groups (5 items) (Drag and drop into the appropriate area below) Cof CH2 Nof NH Hof NH Hof CH2 O of C=O Categories Hydrophilic Hydrophobic Drag and drop here Drag and drop here