In the laboratory, a students mixes 2 solutions of water. The first solution contains an acid dissolved in water and has a mass of 75g. The second solution contains a base dissolved in water and also has a mass of 75g. When the student mixes the solutions together in a foam cup calorimeter, the temperature of the resulting solution raises by 35 ∘ C . How much heat in kilojoules was released by this reaction?
Can someone show me the steps to achieve the answer, I’m so lost.

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced. be sure your answer has the correct number of significant digits.