All Solutions

Exercise 1

Result

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E. I, II and III

Exercise 2

Result

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C. The presence of double covalent bonds between carbon atoms.

Exercise 3

Result

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C. Sugars and amino acids are made of the same elements but amino acids also contain nitrogen.

Exercise 4

Result

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C. The mass of carbon in the products is greater than the mass of carbon in the reactants.

Exercise 5

Result

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A. lines that break and reform between the spheres.

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