Which of these is an example of a chemical change? A. Lighting a match
B. Freezing water
C. Tearing up a piece of paper
D. Dissolving sugar in water

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он