Chemistry energetics AS question?

How do you work out calorimetry calculations with two solutions?

for the mass, use the sum of the volumes of the 2 solutions. (assume 1cm3 = 1g)
for the specific heat capacity, we assume it is 4.18 (same as that of water)
for the moles, we use the moles of the limiting reactant (ie if they are both the same, use the moles of one of them)
Hope that helps!