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Chapter 9: Mastery (Homework) Question Question Progress: 13/16 groups Due Jan 20 at 11:00 PM [Review Topics] L Use the References to access important values if needed for this question. Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2HBr(g) + Cly (g) 2HCl(g) + Bra(g) N 0 Submit Answer Retry Entire Group 4 more group attempts remaining Next)