In a calorimetry experiment, 4.00 g of potassium iodide was added to 150 mL of water. If the temperature decreased by 8.70 C, the molar enthalpy of solution for potassium iodide is +/- kJ/mol. Give your 3-digit answer below rounded to the nearest whole number.

Calculate the expected ph values of the buffer systems from the experiments (a, b,c, d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

Define dew point. i am writing this part to be able to ask the question

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.