A certain compound has a ratio of two atoms of element X for every one atom of element Y. Suppose a sample of element X and a sample of element Y react to form 1 kg of compound X2Y. After the reaction is complete, none of the reactants are left over. Which of the following could NOT be the masses of reactants X and Y

How many atoms are there in 5.70 mol of mg

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.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled