Calorimeter - heat per mole?

Question

50mL of 0.20M HCl at 25*C is added to 50mL of 0.20M KOH at 25*C in a coffee cup calorimeter, the mixture temperature rises to 26.4*C.

What is the heat of reaction per mole of acid?

Mixture c.p=4.18J/(g.K) Densities of reactant solutions both 1.00g/mL

Answer 1

50mL of 0.20M HCl at 25*C is added to 50mL of 0.20M KOH  = 100ml

100ml @ 1.00g/mL = 100g

dH = mCdT

dH = 100g (4.18J/g-K)(1.4 C rise)

dH = 585.2 Joules

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50mL of 0.20M HCl

0.050 litres @ 0.20mol/litre = 0.01 moles

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585.2 joules / 0.01 moles = 58,520 Joules / mole

your answer is 58.5 kJ/mol

but if the ml & the Molarity do not have any more sig figs , you should consider rounding your answer off