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A metal objet with a mass of 19 g is heated to 96 degree celcieus, then tranfered to a clorimeter containing 75 g of water at 18 degree celcieus. The water and metal objet reach a final temperature of 22 degree celcisus. What is the specific heat of this metal objet?
State the compositions and relative proportions of the two phases present after a solution initially at thjis mole fraction (0.300) is heated to 394.94.
Plot NO2 versus time, ln NO2 vs time, and 1/NO2 vs time. Which graph yields the best straight line? what is the reaction order with respect to NO2? Briefly explain
Determine the molar absorptivity of the acidic form of bromocresol green at 445 nm and at 615 nm. Given: Stock soln of bromoscresol green= 80.0 mg/L Molar Mass= 698.0 g/mol ?(445nm)=A445/[BG]
strip of magnesium reacts in 3.0 mL of 5.0 M HCl over a given period of time. Evaluate the mol mg/mol HCl ratio for the reaction.
how many moles of sodium hypobromite nabro should be added to 1.00l of 0.050m hypobromous acid hbro to form a buffer
Determine which H atom transition (ninitial,nfinal) was responsible for the emission of a photon with a frequency of 6.91 x 1014 Hz.
determine the mass of each of the following salts required to form a saturated solution
Calculate the pH of a buffer solution that is 0.250 M in HCN and 0.170 M in KCN. For HCN, Ka = 4.9 x 10^-10 (pka = 9.31). Use the equilibirum approach to calculate this pH
If the container is compressed to 2.40 L and the temperature is increased to 36 degree celsius, what is the new pressure,P2 , inside the container? Assume no change in the amount of gas inside the cylinder.
A 1L steel tank has a safety valve that opens when the internal pressure exceeds 850 torr. The tank is filled with He at 23 oC and 0.991 atm.
Balance the following skeleton reaction, calculate Ecell, and state whether the reaction is spontaneous:
Draw all of the products of the second propagation step in the free-radical bromination of 2,3-dimethylbutane including inorganic
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