What is the ph of a buffer that is 0.6 m hf and 0.2 m naf ? the k a of hf is 6.8 × 10 −4 ?

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 terms are used to identify pure substances

What is the molecular weight of copper