In proteins, hydrogen bonds form between the backbone oxygens and amide hydrogens. When the spacing of the amino acid residues participating in a hydrogen bond occurs regularly between positions i and i+4, an alpha helix is formed. When the spacing is less, between positions i and i+3, ...
Which of the following compounds will form hydrogen bonds with water? (a) CH_3CH_2OCH_2OH (b) CH_3CH_2CH_2F (c) CH_3CH_2CH_2NHCH_3 (d) CH_3CH_2CH_2COOH (e) CH_3CH_2N(CH_3)_2. What is Hydrogen bond? Which of the following compounds ...
What can we learn from NMR about Hydrogen Bonds ?Grzesiek, Stephan
Why is hydrogen important as a future clean energy source? A fuel is a chemical that can be ‘burnt’ to provide useful energy. Burning normally means that chemical bonds between the elements in the fuel are broken and the elements chemically combine with oxygen (often from the air). For ...
What is hydrogen sulfide? What do hydrogen bonds connect? What produces hydronium ions in water? What charge would an ion that has 11 protons, 11 neutrons, and 10 electrons would have? What is the symbol for the ion with 19 protons and 18 electrons?
while in cellulose each glucose subunit is "flipped" with respect to its neighbors. Consequently, the structure of cellulose — unlike that of starch — creates opportunities for adjacent chains to form hydrogen bonds with each other. These hydrogen bonds hold chains together like the strands of ...
2-Butene-1,4-diol, also known as 2-Butene-1,4-diol, is a colorless liquid at room temperature and pressure. It is soluble in water and most organic solvents. This polar molecule can form hydrogen bonds with water molecules due to the presence of two hydroxyl functional groups. It finds...
Three orbitals with a single electron align themselves in a head-on direction with the s orbitals of 3 hydrogen atoms to form sigma bonds. Three sigma bonds are observed between N and H atoms, represented as N-H bonds. Each line between N and H indicates the bonding and the number of ...
Can CH3OCH3 form hydrogen bonds with water molecules? Explain. Does CH3-O-CH3 have hydrogen bonding? What is a hydrogen bond? How do they work? Would you describe those bonds as strong or weak? Can (CH3CH2)3N form hydrogen bonds with water molecules? Explain. Descr...
What is dependent on the ability of water molecules to form hydrogen bonds with other molecules besides water? How much solid agarose and how much water would you use to make 100 ml of a 1.5 % agarose solution? One liter of 70% alcohol is needed. How much 90% alcohol is required to...