If you need to multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem, what would be the final value for the
enthalpy of reaction you use for this intermediate reaction? C2H4 +3 02-2
CO2 + 2 H20, AH = -1410 kJ
A. 2820 kJ
B. -1410 kJ
C. -2820 kJ
D. 1410 kJ
PLEASE HELP ITS DUE TONIGHT

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

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