Answer:


Explanation:
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At first, it turns out convenient to compute the total moles of sodium that will be dissolved into the solution by considering the added amounts of sodium bromide and sodium sulfate:

Once we've got the moles we compute the final volume via:

Thus, the molarity of the sodium atoms turn out into:

Now, we perform the same procedure but now for the bromide ions:

Finally, its molarity results:

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The nature of reactants, temperature, concentration, surface area and catalysts.
The first one is exothermic because energy is a reactant, the second formula is endothermic
Answer:
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