# A scientist measures the standard enthalpy change for the following reaction to be -209.6 kJ : CO(g) + 3 H2(g)—CH

###### Question:

A scientist measures the standard enthalpy change for the following reaction to be -209.6 kJ : CO(g) + 3 H2(g)—CH (8) + H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CH() is kl/mol.

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