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A 32.22 g sample of a metal that looks like aluminum is heated to 99.8 C in hot water. The metal is then quickly transferred into exactly 50.0 ml of water at 22.9 C in a calorimeter; assume no cooling of the metal during transfer. When thermal equilibrium is attained, the temperature of water- plus-metal has risen to 28.8 C
Whatis the specific heat of this metal?
Is this metal likely actually to be aluminum? Why, or why not?
Explain how the carbonate system in natural waters provides buffering capacity
At what temperature (celsius) will the rate constant for the reaction be 140.0 s-1? Use the conversion Kelvin = C + 273.15
A student studied the clock reaction described in this experiment. She set up a reaction mixture by mixing 10mL of 0.010 M KI, 10mL of 0.0010 M Na2S2O3, 20mL of 0.040 M KBrO3 and 10 mL of 0.10 M HCL.
An air bubble was initially trapped in the buret but was dispensed during the back titration of the unreacted HCI. As a result of this technique error, will the reported amount of antacid in the sample be too high or too low? Explain
A gas chromatogram of the organic components of a sample of beer using a column that separates compounds on the basis of their relative boiling points provides a GLC trace with several peaks. Two of the smaller peaks, with retention times of 9.56 ..
all oxygen gas from a 10.0-L container at a pressure of 202 kPa is added to a 20.0-L container of hydrogen at a pressure of 505 kPa. after the transfer, what are the partial pressures of oxygen and hydrogen?
di ethyl ethal is a volatile, highly inflammable organic liquid that is used mainly as a solvebt. the vapour pressure of di ethyl ethal is 4.01mmHg at 18 degree celcius.
The most common source of copper (rm Cu) is the mineral chalcopyrite (rm CuFeS_2). How many kilograms of chalcopyrite must be mined to obtain 230. g of pure rm Cu?
The fathom was originally defined as the length of man's outsterched. it is now defined as 6.00 ft. calculate a resoanble estimate of the surface are of an adult humman' body in fathom.
How many calories of heat are necessary to raise the temperature of 350 ml of water from 1.00oC to 5.00oC.
Colbalt monoxide CoO, the blue color in ceramics glazes, is prepared by decomposing cobalt (II,III) oxide at 950degree celsius.
Give the balanced total and net ionic equations and predict whether a reaction occurs. indicate whether the reactions are precipitation reactions or acid-base reactions.
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