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A Compound Containing 3 Atoms Of Carbon And 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The Two End Products Of This Wquation Are Carbon Dioxide (CO2) And Water. What Element Should You Look At First?

A compound containign3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide (CO2) and water. What element should you look at first in balancing this equation? A. Oxygen, B. Hydrogen, C. Carbon, D. Dioxide

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bankshot

You know right away the answer is not D. dioxide, as dioxide is not an element, but part of the name of a molecule carbon dioxide, CO2. The two oxygen part. It seems like your teacher/text has given you a step by step procedure to solve this reaction: C3H8 + xO2 -> yCO2 + zH2O with x, y and z being unknowns. Right away you can see 3 carbons on the left side, so y on the right side has to be 3. x number of oxygen molecules will combine with C3H8, so an even number of oxygen atoms will show up on both sides of the reaction.

answered 1 year ago