Many scientists, including Joseph Priestly, hypothesized that fuels lost mass as they burned due to the loss of a substance called phlogiston. Since phlogiston was missing, these fuels could not undergo any further combustion. Which of the results in the experiment above refute this hypothesis? a. Ethanol
b. Charcoal
c. Wood
d. Mercury

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?