Hydrogen bonding is necessary for bonding carbon to oxygen. forming double-stranded dna molecules. decreasing the boiling point of liquids such as water. causing van der waals interactions.

Iknow the answer is a but i don't know why

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.