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Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the complete combustion of 2.175 g of lysine gave 3.94 g CO2 and 1.89 g H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. (a) Calculate the empirical formula of lysine. (b) The approximate molar mass of lysine is 150 g. What is the molecular formula of the compound?
Among the following, which can be used as a basis for identifying the type of orbital hybridization of a carbon atom given the Kekule or Lewis structure of the compound? Identify all that apply. Explain/Defend your answers.
- number of C atoms around carbon
- number of H atoms around carbon
- number of groups attached to the C atom
- number of lone electron pairs or unpaired electrons
- around the C atom
- type of bond (single, double, or triple) between C and
- other atoms around it
Why is it possible to separate naphthalene and benzoic acid in this experiment? 4. With the acidification of the sodium bicarbonate solution, a gas is produced. Give a chemical equation to explain the formation of this gas.
Using words rather than structural formulas, characterized the following products formed when the following tracylglycerol undergoes the following reaction:
Complete hydrolysis
Complete saponification using NaOH
Complete hydrogenation
b) The folding of the polypeptide backbone in three-dimensional space.
c) The interaction of amino acid side chains.
d) The sequence of amino acids in a polypeptide chain.
What are 3 properties of a good drying reagent??
How are the differences in properties of Alcohol, Phenol, and Ether related to their functional group?
What is the general chemical equation for Seliwanoff's test?
