(d) A compound contains carbon and hydrogen only. On combustion, 0.150 g of compound gives 0.488 g CO2 and 0.150 g H20. The molar mass is found to
52.09.
0) What is the mass percentage of each element in the compound?
(i) Calculate the empirical formula of the compound.
(iii) Calculate the molecular formula of the compound.
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Describe the interaction that occurs between two objects with the same electrical charge.

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.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false