A) 2H₂(g) + O₂(g) → 2H₂O(l) + 285.83 kJ
Exothermic
B) 2Mg + O₂ → 2MgO + 1200kJ
Exothermic
Answer:
A) It contains a lot of matter.
Answer:

Explanation:
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In this case, since the sulfuric acid and sodium hydroxide react in a 1:2 mole ratio, given the reaction, we realize they have the following mole ratio at the equivalence point:

Which in terms of concentrations and volumes is:

Thus, we can plug in the volume and concentration of acid to find the moles of base:

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