What is the ph of methanol? why doesnt pure methanol have a ph? answer in terms of chemistry.

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Which of the following is a physical property flammability heat of combustion solubility and toxicity