When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high-performance racing cars. The combustion of methanol has the balanced, thermochemical equation   CH3OH(g)+32O2(g)⟶CO2(g)+2H2O(l)Δ?=−764 kJCH3OH(g)+32⁢O2⁡(g)⟶CO2⁢(g)+2⁢H2O(l)⁢Δ⁢H=−764 kJ   How much methanol, in grams, must be burned to produce 685 kJ685 kJ of heat?

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