Which of the following statement is suitable for displacement reaction? (A)Metals are arranged in the increasing order of their reactivity.
(B)Metals are arranged in the decreasing order of their reactivity.
(C)Less reactive metal replaces more reactive metal from their salt solution
(D)More reactive metal replaces less reactive metal from their salt solution.
Please answer and thank you

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.

How many moles are in 43.9 l of oxygen

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration