A 100 g sample comprised of molecule (A) is made up of 57.1 g of oxygen and 42.9 g of carbon. Another 100 g sample comprised of molecule (B) is made up of 72.7 g oxygen and 27.3 g carbon. The ratio of oxygen: carbon mass ratios between the two molecules is 2:1. Which law is demonstrated in this calculation?

the answer is b & c i believe : )

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

you need to have a picture of the atom that way we can answer it