One remedy for a deficiency of vitamin B12 for the elderly is a regular injection of this important nutrient. The vitamin B12 injection dose depends on factors such as gender and age.
Hydrogen bonds happen in alcohols. As a matter of fact, any molecule that contains a hydrogen atom attached to an atom of nitrogen or oxygen is capable of such a bond. Ethanol is one such alcohol that features hydrogen bonds. Ammonia is an example of hydrogen bonding. In the case of ammonia, however, the hydrogen bond happens to be relatively weak.
Page 10 40. Statements: (1) Hydrogen bonding is not possible between carboxylic acid molecules. (2) The alpha-carbon atom in a carboxylic acid is the carbon atom to which the carboxyl group is attached. (3) Sodium butanoate and ethyl butanoate are both examples of esters. A) All three statements are true. B) Two of the three statements are true.