How are indicators chosen for titration? A. On the basis of the pH at equilibrium
B. On the basis of the pH of the reacting acid
C. On the basis of the pH at the equivalence point of the two reagents
D. On the basis of the pH of the analyte

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.