1)What is the enthalpy change(Q) when 60.0 g of NaOH is dissolved in one litre of water, given that the temperature of the solution increased by 15.8 °C? 2)Determine the value of Δ for this reaction, taking the specific heat capacity of water to be 4.2/⋅JgC∘ and assume that initial temperature is 22 degrees and final temperature is 17.9 degree Celsius. Give your answer in units of kilojoules per mole and to 1 decimal place. Remember to include a sign in your answer.

3) In a calorimetry experiment, how many Joules of heat are given off when 0.5 g of food sample is heated from 20 to 30 degree Celsius.(specific heat of water(c) is 4.18 J/gC) Write the equation and show your calculation

4) A 100ml of water is heated using a burner. If the ΔT=20 degree C .Find the heat energy change in kJ/g. (c = 4.186 joule/gram °C) .

5) quantity of water is heated from 25.0 °C to 36.4°C by absorbing 325 J of heat energy. What is the mass of the water? show your calculation