(Please don’t post a link and actually give an answer) Why does mixing reactants in different molar ratio’s affect the amount of product and the amount of each reactant left over?

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

In which situation can a mixture always be called a solution

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.