For HCN in water, Ka=6.0 x 10-10. Calculate the ratio of CNto HCN at pH 4, 7, and 10. Considering that HCN is highly toxic and has a KH=0.122, which of these pHs is the best for wastewater treatment? (d) Many metals form precipitates with hydroxide. Does an acidic, a neutral, or a basic pH benefit these water treatment processes?

What are transitions between a liquid and a solid called? identify which way they are transitioning

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

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.