Who reported four “element” classifications, but included some substances that were combinations of elements rather than true elements in his listing? Henry Moseley
Dmitri Mendeleev
Antoine Lavoisier
Johann Dobereiner

What is the [oh-] in a solution with a poh of 3.90

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103