Which set of ordered pairs (x, y)(x, y) could represent a linear function? A=
{(3, 4),(5, 2),(7, 0),(9, -2)}
{(3,4),(5,2),(7,0),(9,−2)}
B=
{(-1, 0),,(0, 3),,(1, 6),(2, 8)}
{(−1,0),(0,3),(1,6),(2,8)}
C=
{(-2, 7),(1, 3),(2, 1),(3, -1)}
{(−2,7),(1,3),(2,1),(3,−1)}
D=
{(0, 3),(4, -3),(6, -6),(8, -8)}
{(0,3),(4,−3),(6,−6),(8,−8)}

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

‘which reaction would most likely require the use of an inert electrode?

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .