A student performs a reaction to precipitate copper (II) carbonate from copper (II) acetate and sodium carbonate. The theoretical yield for this experiment is 4.98 g. The reaction performed by the student yielded 2.03 g. What is the percent yield?

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Is this correct if not can u correct me