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If a solution contains 57.2% H2O, 32.6% HDO and 10.2%D2O by mass, what is DS, DG, DV and DH for the separation process if the temperature is 21 °C? Liquid chromatography can be us
The pressure of an unknown gas is measured with a manometer. The pressure is measured as 673 mmX. What is the pressure in mmHg? Instead of mercury the manometer is filled with a liquid (X)
Use orbital configurations to determine which has the stronger bond for each of the following pairs: (a) O2 or (b) O2+; (c) N2 or (d) N2+; (e) F2 or (f)F2+; (g) CN or (h) CN-. Enter the
Determine how many pounds of CO2 are formed from the complete combustion of 1.00 gal of gasoline? Assume that gasoline has the formula C8H18 and has a density of0.703g/mL.
Explain in terms of the dissolution equilibrium for AgBr and Le Chatter's principle, discuss how the formation of this ion explains the fact that silver bromide is soluble in concentrated NH3(aq).
Determine the numbers of grams of fat would to be burned to heat one liter of water (d = 1.00 g/mL) from 25.00 oC to 30.00oC? The specific heat of water is 4.184 J/goC.
Calculate H of this reaction when 26.0 mL of 0.565 M H2SO4 is added to 26.0 mL of 1.13 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature raises to30.17°C.
When 0.5132g of NaNO2 is allowed to react with an excess of sulfamic acid solution, the volume of N2 (g) formed is the 176 mL. The temperature of water is 26.0 deg C and that of the gas is
Complete neutralization of a sample of antacid containing only aluminum hydroxide and magnesium hydroxide required 48.5 mL of 0.187 M HCl. The chloride salts from this neutralization were obtained b
What useful applications can you suggest for the effect when the super conductivity is a phenomenon found at the low temperatures where certain materials lose all resistance to an electric current?
Explain why does methyl benzoate dissolve in the concentrated sulfuric acid? Write down an equation showing the ions that are formed.
Determine how many J of heat necessary to raise the temperature of a 1.05 kg block of iron from the 25.0 C(Celsius) to 88.5 C (Celsius) where the specific heat of iron metal is 0.450J/g-K.
What is the pressure (torr) of the gas sample when a flask of Argon gas is connected to the left arm of a manometer? The Hg level is 78.9cm. The right arm of the manometer is open to the atmosphere
At 39.0°C a 2.41L flask of gas was found to have a pressure of 710mmHg. The temperature was changed to 78.5°C and the pressure was changed to 1061mmHg. Determine the volume of the gas under
Suppose 1.00 L of water absorbs enough radiation to rise the temperature of the water from 20.0 C to 30.0 C. Water absorbs IR radiation with a wavelength of 2.8 micro meters.
The decomposition of H2O2 is expressed as H2O2 ---> H2O +1/2 O2; after 10 minutes, the volume of O2 formed is 8 ml and at the end of the reaction is the 36 ml. Identify the rate of the re
The rate of reaction among two atoms 'A' and 'B' is expressed as the rate = k [A][B]2. When concentration of both the reactants A & B is doubled, discuss what happens to reaction rate?
Write down the thermo chemical equation for the formation reaction of CaCO3 (s). [From the standard states of the elements; determine the heat of formation value for calciu
Determine the numbers of mL (to the nearest mL) of 0.168-M KF solution should be added to 560. mL of 0.237-M HF to prepare a pH = 3.30 solution?
What is the molarity of the KMnO4 solution when a 21.40 ml volume of a KMnO4 solution was required to titrate 25.00 ml of a 0.0400 M oxalic acid solution?
Describe the direction in which the retention time would change (longer or shorter) for a substance in a GC experiment when the experiment parameters are changed as shown below:
Although the mechanism of the coupling process is not well understood, it is known that the rate appears to depend on the square of the concentration of the halide.
2 kinds of carbonyl acceptor structures in addition to benzoate esters can be used in reaction with phenyl magnesium bromide to afford triphenyl methanol. What are they?
An organic compound contains H, C, N, and O. Combustion of 0.1023g of the compound in excess the oxygen yielded 0.0991 g of H2O and 0.2766 g of CO2.