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Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the final pressure in torr after mixing, if initially C3H8 is in the first flask (Volume = 4.000 L) at 371.4 torr and H2S is in the second flask (Volume = 2.000 L) at 265.9 torr
The bond energies are: C H 416 kJ/mol; C C 356 kJ/mol; C C 598 kJ/mol; O O 498 kJ/mol; C O 803 kJ/mol; H O 467 kJ/mol.determine the heat of combustion of ethylene ?
Explain the steriochemisty of gyceraldehyde and glycerol, give reasons for absence of anomeric forms in sucrose
The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.800 miles.
Calculate the number of grams of CuSO4 needed to make 50.0 ml of a .25M solution of CuSO4 in 3.0M HCl.
A 5.00 L volume of ethane gas is heated from 298 K to 596 K. If the pressure remains constant, what is the final volume?
what is the wavelength of a photon that has three times as much energy as that of a photon whose wavelength is 779 nm.
A 0.338-g same of anhydrous sodium carbone, Na2CO3, is dissolved in water and titrated to a methyl orange endpoint with 15.33 mL of a prepared hydrochloric acid solution. What is the molar concentration of the HCl solution
If you have 240.0 mL of water at 25.00 °C and add 100.0 mL of water at 95.00 °C, what is the final temperature of the mixture.
Carbon monoxide and water vapor, each at 190 Torr, were introduced into a 250 mL container. When the mixture reached equilibrium at 690 ?C, the partial pressure of CO2(g) was 108 Torr.
Calculate the pH of a solution containing 25.00 mL of 0.12M formic acid (Ka=1.7x10^-4) to which the following amounts of 0.10M NaOH have been added:
A beaker contains 250 mL of .0150 M silver ion. To this beaker is added 250 mL of .300 M bromide ion. What is the concentration of Ag+ in the final solution. Ksp for AgBr = 5.0 x 10^-13
For a 5.0 gram sample of each of the following, what weight of water will be lost if the sample is heated to constant weight: CoCl?*9H?O; CuSO?*5H?O; ZnSO?*4H?O; BaCl?*2H?O.
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