Consider the reaction below. How much heat is absorbed if 5.00 moles of nitrogen react with excess oxygen?
2 N2 (8) + O2(g) → 2 N20 (8) AHrxn- +163.2 kJ

Explanation:

The given chemical reaction is:

When two moles of nitrogen reacts with oxygen, it requires 163.2kJ of energy.

When 5.00 mol of nitrogen requires how much energy?

Hence, the answer is 408 kJ of heat energy is required.

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

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