QUESTION 18 From the following information, determine the enthalpy of formation of C2H4(g). C2H4(9)→ C(s) + H2(g) ΔΗ = −

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QUESTION 18 From the following information, determine the enthalpy of formation of C2H4(g). C2H4(9)→ C(s) + H2(g) ΔΗ = −26.2 kJ O a. 26.2 kJ/mol O b. 52.4 kJ/mol O c.-26.2 kJ/mol O d. 104.8 kJ/mol O e.-52.4 kJ/mol QUESTION 19 What is the pressure in a 2.0 L container at 27 °C that contains 2.0 g O2 and 4.0 g N₂? O a. 1.3 atm O b. 2.5 atm O c.4.4 atm O d. 5.0 atm e. none of these