(4) slate because it is the strongest
Answer:
A. When two aqueous solutions are mixed, a precipitate is formed.
Explanation:
The precipitate (a solid substance that falls from the liquid) is the result of a chemical reaction taking place between the liquids.
The other three answer choices are indicative of physical changes (temperature change, phase change, color change).
Answer:
Oxalic acid is a dicarboxylic acid and forms sodium salt with NaOH and water
Explanation:
That would cause the equation to shift right, and make more NH3 and decrease the amount of N2
they try to ask themselves why certain things happen and they try to make an educated guess of what will happen.