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A coffee cup calorimeter contains 480.0 grams of water at 25.00 C. To it are added: 380.0 grams of water at 53.5 C and 525.0 grams of water at 65.5 C. Assuming the heat absorbed by the styrofoam is neglibible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 C-1.
Under these conditions, calculate the final concentration of glycerol-3-phosphate. Remember to convert kJ to J.
Calculate the equilibrium constant (Keq) for the reaction of equimolar amounts of acetophenone and sodium hydroxide to generate the enolate.
About how much phenacetin will remain dissolved when the water calculated (94ml) is cooled to room temperature
What proportions of ethanol and water should be mixed in order to produce 100 cm3 of a mixture containing 50 percent by mass of ethanol.
When using M1 x V1 = M2 x V2 to calculate any concentration or volume, what must one remember with regards to glassware when recording / using volumes
I dissolved .5 grams of mustard in 3 mL of distilled water. I was asked to determine the mass percentage of acetic acid in mustard, so I added 2.5 mL of NaOH to turn the mustard solution red.
What is the expected freezing point of an aqueous solution of 2.62 kg of nitric acid, HNO3 , in a solution with a total mass of 5.91 kg? Assume that the nitric acid is completely ionized.
The pH is 3.95 at the first equialence point and 9.27 at the second equivalence point. If the acid solution contained 0.2015 g of the acid, what is the molar mass, pKa1, and pKa2 of the acid
The good professor accidently grabs the Na2HPO4 bottle. What pH did professor Whoops expect the solution to be. what was the actual pH of the solution as made
What mass of PbCl2 is formed from mixing 0.334 L of 0.112 molar NaCl with 2.12 L of 0.0343 molar Pb(NO3)2?
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first ..
A 100.0 Ml SAMPLE OF 0.100 M methylamine (CH3NH2, Kb = 3.7 x 10^-4) is titrated with 0.250 M HNO3. Calculate the pH after addition of each of the following volumes of acid
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