Carbon dioxide can be formed from the reaction of carbon monoxide and oxygen. How many moles of carbon monoxide must be reacted in order to produce 147 kJ of energy? 2 CO + O2 2 CO2 ΔH = -787 kJ

0.374 moles of carbon monoxide

Explanation:

Let's consider the following balanced thermochemical equation.

2 CO + O₂ ⇒ 2 CO₂    ΔH = -787 kJ

According to this balanced thermochemical equation, 787 kiloJoules of heat are released (this is the meaning of the minus sign) when 2 moles of carbon monoxide react. The moles of carbon monoxide that must react to produce 147 kJ of energy are:

(-147 kJ) × 2 mol CO/(-787 kJ) = 0.374 mol CO

it takes on an electronical energy

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