Mercury (II) ions form a 1:1 complex with triphenyltetrazolium chloride (TTC) that absorbs light at 255 nm. The mercury (II) in a soil sample was extracted into an organic solvent containing an excess of TTC, and the resulting solution was diluted to 100.0 mL in a volumetric flask. 5.00-mL aliquots of this solution were pipetted into six separate 25.00-mL volumetric flasks. A standard solution of 5.00 x 10^-6 M Hg was added to each as given in the following table. The solutions were diluted to 25.00 mL and the absorbance measured. What is the concentration of mercury (II) in the original solution? Standard Volume (mL) 0.00, 2.00, 4.00, 6.00, 8.00, 10.00 Absorbance 0.582, 0.689, 0.767, 0.869, 1.009, 1.127

Which of these best describes an ionic bond?

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.