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How many grams of diphenyl (C 12H10) must be dissolved in 655 g of benzene to lower the freezing point by 3 .20ºC?
An unknown mass of each of the given substances as with The final temperature is recorded as indicated 1.Pyrex glass (tf=67.6 C), 2.Sand (tf=70.4 C), 3.ethanol (tf=45.9 C), initially at 19.0 degrees celsius, absorbs 1930 Joules of heat
Gas x effuses 0.629 times as far as oxygen under the same conditions. what is the molar mass of gas x.
how do you find the specific heat of platinum if 23.6 grams is heated from 10.0c to 20.0c using 30.68 J of heat.
if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.
The valve between these Tanks X and Y is opened and the gases are permissible to mix. After the gases have had time to mix, calculate the partial pressure of the oxygen gas?
Predicting the Polarizability of a Molecule. Consider the following set of data for polarizability. From what I have learned, the simplest model for predicting the polarizability of a molecule is to assume that polarizability scales with the type.
A hypothetical molecule, X-Y, has a dipole moment of 1.90 D and a bond length of 169 pm. Calculate the percent ionic character of this molecule.
Determine ΔG for this reaction When A is full into a cylinder at a pressure of 9.89 atm and the system is permitted to come to equilibrium, the final pressure was 15.94 atm.? Express your answer in units of kJ/mol
Draw a series of titration curves for the titration of a strong base with a strong acid where the concentration of the acid is 10 -1 , 10 -2 , and
A sample of gas with an initial volume of 27.6L at a pressure of 735 mmHg and a temperature of 309 K is compressed to a volume of 15.8 L and warmed to a temperature of 374 K.
Determine the new equilibrium concentration of hydrogen, if the hydrogen concentration is raised by 0.299 M?
In which compound does sulfur have the highest oxidation number a)Na2S2O3 b)NaHS c)H2S d)KHSO3 e) CuSO4
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