Describe the preparation of: A/ 5.00L of 0.05 KMnOu from the solid reagent.

B/ 200 mL of 1% (W/v) aqueous Cuso4 from 0.365 M CuSo4 Solution.

C/ 1.50 L of o.215 M NaOH from the concentrated commercial reagent (5% NaOH (w/w) Sp. gr = 1-526)

D/ 1.5L of a solution that is 12.0 ppm in K+

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.