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A sample of poylethylene is found to have an average molecular weight of 3.2x10^6. estimate the root-mean-square end-to-end distance if the sample is dissolved in a theta solvent. assume that the "persistence length" is equal to √2 times the C-C bond length, 1.54 angstroms
The vapor pressure of water is 28.3 torr at 29°C then determine what is the partial pressure of oxygen collected if a reaction at that temperature produces Carbon Dioxide which is collected over water at a total pressure of 576 torr, ?
If a 1,2-diol is subjected to a periodic acid test, a white solid will form when silver nitrate is added. What is the identity of the white solid?
Consider the substitution reaction of H2S-BH3 with NH3, which generates two product molecules (ignore the states of matter), assuming that no species exceeds the octet rule. Given the following information:
A 1 gram sample of calcium was burned in chlorine to give a 1.95 g sample of pure CaCl2. the energy given off in this reaction was 30.3 kJ. given this information, find the heat of formation of 1 mol of CaCl2
which the excess HClO4 was back-titrated with 8.72-mL of 0.3045 M NaOH using bromocresol green as an indicator. What is the concentration of the perchloric acid solution?
These two substances reach thermal equilibrium at a temperature of 64.2 degree celsius. If the specific heat capacity of substance "B" is 1.17 J / g-C, what is the specific heat of substance "A". (assume no heat is lost to the surroundings)
when 1.5173 g of an organic iron compound containing c h o and fe was burned in o2 2.838 g of co2 and 0.8122 g of h2o
What is the pH of an acetic acid-potassium acetate buffer if the salt concentration is 40% higher than that of the acid
the active ingredient in aspirin is acetylsalicylic acid hc9h7o4 a monoprotic acid with ka 3.3 x 10-4 at 25 degrees c.
Effusion describes, A) the process by which a gas spreads out through another gas B) the process that describes the collisiions that occur between gas molecules
Chlorine trifluoride is used in processing nuclear reactor fuel. It has a vapor pressure of 29.1 torr at -47.0°C and its heat of vaporization is 30.61 kJ/mol.
when 3-hydroxycyclobutanone is treated with mid base, 1,3,5-triacetybenzene is formed in 50% yield.
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