Calculate the mass of ethylene glycol
Calculate the mass of C2H6O2 that must be added to 1.00 kg of ethanol, C2H5OH,to reduce its vapor pressure by 13.2 torr at 35 degree celsius. The vapor pressure of pure ethanol at 35 degree celsius is 100 torr.
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Provide a structure for the following compound: EI mass spectrum: two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR: ? 1.30 (3H, t J = 7 Hz); ? 1.80 (3H, d, J = 7 Hz); ? 4.23 (2H, q, J = 7 Hz); ? 4.37 (1H, q,
The cranberry juice control is 27% juice when purchased from a local grocery store. Provide the calculations required to prepare the series of standard solutions of cranberry juice
What would you guess is the sign for the change in entropy for this reaction. b) What is the expected sign for the change in free energy for this reaction c) Finally, what is the expected sign for the change in enthalpy for this reaction
If the solubility producet Ksp for silver phosphate is 1.8x10^-18, what is the molar solubility of silver phosphate in water at the same temperature
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 67 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 24 s for 1.0 L of O2 gas to effu
A 40.0% mass percent solution of ethylene glycol (C2H6O2) in water has a density=1.0514g/mL. Find the molality (m).
The decomposition of dinitrogen pentoxide obeys the rate-law expression rate = 0.080 min-1[N2O5]. If the initial concentration of N2O5 is 0.30 M, what is the concentration after 2.6 minutes
A glycine buffer is prepared by mixing 100 mL of 1.0M glycine, pH 6.0, with 100 mL of 0.5M NaOH and 300 mL of water. The pKa values for glycine are 2.4 and 9.6. What is the concentration of the buffer solution?
Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH : (1b) The volume of HI(aq) required to reach the equivalence point : (1c) Th
A gas sample has a voulume of 4250 ml at 15 degree celcius and 745mmHg. What is the new container with a voulume of 2.50 L and a pressure of 1.20 atm
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