A solution is made by taking 2.42 grams of NaCl, 6.44 grams of NaClO4, 3.81 grams of KNO3, and 4.64 grams of KBr in enough water to make 500 mL of solution. A portion was treated with thymol blue indicator, for which the pKIn = 8.8, and the colors are yellow for HIn, and blue for In‑. What color should be obtained with the test portion?

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?