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Pectins are linear polyaccharides that are the cement in cell walls of many non-woody plant parts. The short chains are soluble, but not digested by humans and, therefore, are a source of soluble fiber. Pectin is especially high in citrus fruits and is also used as a gelling agent for jams. Pectin is made of a repeating galacturonic acid monomer. Alduronic acids (like galacturonic acid) are oxidized sugars with the primary alcohol group (C-6, in this case) oxidized to a carboxylic acid. Every second carboxylic acid group in the galacturonic acid chain is methylated in pectin. The repeating galacturonic acid monomers are connected by a-(1->4) bonds. Below draw 4 repeating monomer units making up a pectin molecule
What role does ammonium bromide play in the conversion of the trans-substituted aziridine to the diazabicyclo
the density of an unknown compound made from sulfur and oxygen is 2.47 x 10^-3 g/mL at 23 C and 76 kPa. what are the possible molecular formulas for the compound?
when 2.0g of an electolyte was dissolved in 25.0g water, the resulting solution was found to have a molairy of 0.815M and a molality of 0.800m. a) find the molecular weight of the electolyte.
At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 1.40 atm, PB = 8.90 atm, PC = 5.10 atm, and PD = 2.50 atm.
What is the percent yield of a reaction in which 244 g phosphorus trichloride reacts with excess water to form 144 g HCl and aqueous phosphorus acid (H3PO3)?
How would the boiling of a liquid be affected if it measured on top of mount everest?
I'm working on a Lewis Structures sheet. After we have completed the structures, which i have, we need to predict the shape of the molecule in VSEPR. What is the shape of a C2H6 amd a C2H4 molecule in VSEPR?
carbon disulfide can b made by the reaction of carbon dioxide and sulfur trioxide 2so3(g) + Co2(g) + heat >
I dissolved .5 grams of mustard in 3 mL of distilled water. I was asked to determine the mass percentage of acetic acid in mustard, so I added 2.5 mL of NaOH to turn the mustard solution red.
A reaction mechanism involving three steps is shown below. Identify all of the catalysts in the following mechanism.
Potassium chloride is used in the kitchen as a salt substitute (in place of sodium chloride). Suppose you were planning to make ice cream but discovered too late that you were out of table salt for making the ice bath.
How much heat energy, in kilojoules, is required to convert 61.0 g of ice at -18.0 C to water at 25.0 C ?
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