Which of the following coefficients are needed to balance the combustion reaction of ethanol? a. 2,3,3 b. 4,2,3 c. 2,3,2 d. 3,2,3
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If you examined the human body on a chemical composition basis, which of the following combinations of elements would be most common? (A) C, H, Ca, Cl (B) O, C, P, S (C) O, C, H, N (D) O, C, N, Na (E) C, N, Ca, S
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