(Thermochemistry)
create two solutions such that when you mix equal amounts together, the resulting solution has an initial temperature of 50 degrees Celcius. Note that each flask contains 100 mL of solution. we can assume the heat capacity of the aqueous solutions is equal to 4.18 J/gK degrees.

it should be p1 v1 = p2 v2

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

there are two significant figures.