Methane and Ethane Are Both Made Up of Carbon and Hydrogen.In

Multiple Choice

Methane and ethane are both made up of carbon and hydrogen.In methane,there are 12.0 g of carbon for every 4.00 g of hydrogen,a ratio of 3:1 by mass.In ethane,there are 24.0 g of carbon for every 6.00 g of hydrogen,a ratio of 4:1 by mass.This is an illustration of the law of ________.

A) constant composition
B) multiple proportions
C) conservation of matter
D) conservation of mass
E) octaves