- Math help please I have to turn in soon?

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Consider the reaction: 2 C2H6(g) + 7 O2(g) → 4 CO2(g) + 6 H2O(l) Calc ΔHrxn, if the combustion of 30 g of C2H6(g) releases 777 kJ of heat.? Why is cyanide more poisonous than thiocyanate? A minority group can be defined as one in which:? Match the graph of the function on the right with the graph of its derivative. image uploaded? Calculate ΔE, if a system releases 66.9 kJ of heat to its surroundings while the surroundings do 44.0 kJ of work on the system.?