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At what temperature will a 13.7 g Cl2 sample exert a pressure of 0.993 bar when...

At what temperature will a 13.7 g Cl2 sample exert a pressure of 0.993 bar when confined in a 7.50L container?

It is found that 6.00 g of potassium metal reacts with excess water to release 29.8 kJ of heat.
This means that, for the reaction:
2K(s) + 2H2O(l) à 2KOH(aq) + H2(g)
What is the enthalpy of reaction per mole of potassium metal?
2. The overall reaction in a commercial heat pack can be represented as:
4Fe(s) + 3O2(g) à 2Fe2O3(s) DH0 = -1652 kJ
a. How much heat is released when 4.00 moles Fe react with excess O2?
b. How much heat is released when 10.0 g Fe and 2.00 g O2 are reacted? (Hint: you
need to figure out the limiting reactant first)

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