How many moles do you have in 10.0 grams?
10/153.82 = ??
So 124 kJ/mol x ??moles = xx.
f the molecular mass for a chemical is 153.82 g/mol and the enthalpy of formation is -135 kJ/mol, the heat change will be
kJ when 10.0 g of this chemical is formed.
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