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While 0.850 g of Mg is burned in oxygen in a constant volume calorimeter, 25.4 kJ of energy as heat is evolved. The calorimeter is in an insulated container with 750 g of water at an initial temperature of 18.6 degrees Celsius.
The heat capacity of the calorimeter is 820 J/ka) Compute the U for the oxidation of Mg (in kJ/mol Mg)b) Explain what will be the final temperature of the water and the bomb calorimeter in this experiment?
Enough of a monoprotic acid is dissolved in water to produce a 0.0113 M solution. The pH of the resulting solution is 6.43
All numerical answers must be reported to the correct number of significant figures. In a routine laboratory analysis, a technician prepare a solution containing 0.126 g of KMnO4 in a 0.250 L volumetric flask. What is the molar concentration (mola..
although even more strained than cyclopro-panone, is nevertheless quite stable and can even be distilled. Explain, taking the polarity of the carbonyl group into account.
A famous foot race in California starts from the bottom of Death Valley (100 m below sea level) and finishes at the top of Mt. Whitney (4300 m above sea level). what percentage does the oxygen number density decrease between the start and the finis..
The activity of an enzyme is close to zero at pH = 10 and above and high at pH = 6 and below. The activity of this protein probably depends upon the presence of an amino acid with R-group
HNO3 has 2 dissociating ions whereas Al(NO3)3 has 4, which should result in a higher conductance value. Would this have something to do with aluminum nitrate being paired with water as a solid?
a wing generates a lift l when moving through sea-level air with a velocity u. how fast must the wing move through the
A 113L sample of helium at 27 degrees Celsius is cooled at a constant pressure to -78 degrees Celsius. calculate the new volume of the helium.
In one episode of the 1960s television sitcom, Gilligan's Island, the famous professor constructed voltaic cells to use as substitues for their radio's dead batteries.
A piece of indium with a mass of 16.6 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 48.6 cm3. The correct value for the density of indium from these data is
A student mixes four reagents together, thinking that the solution will neutralize each other. The solutions mixed together are 53.6 mL of 0.129 M hydrochloric acid, 104.1 mL of 0.215 M of nitric acid, 501.5 mL of 0.0126 M calcium hydroxide
What is the molarity of an acetic acid solution prepared by diluting 200.0 mL of 0.500 M HC2H3O2 to a total volume of 1.00 L
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