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Boiling point indicates the strength of intermolecular interactions. Given the boiling points in paraentheses, rank the following molecules in order from strongest to weakest intermolecular interaction: methane (CH4, -164*C), formaldehyde (CH2O, -21*C), methanol (CH3OH, 65*C), and calcium chloride (CaCl2, 782*C). Also, indicate the type of interaction: ionic bonds, London dispersion forces, dipole-dipole interaction, and H-bonds
1. A solution is prepared by dissolving 39.3 g of KF in enough water to form 465 mL of solution. Calculate the mass % ( m/m) of KF in the solution if the densit
A graduated cylinder contains 131 mL of water. A 18.0 g piece of iron (density = 7.86 rm{g/cm^3}) and a 25.0 g piece of lead are added.
Problem- Why should 10% sodium bicarbonate be added slowly to a reaction mixture (acetic acid, 1-octanol, sulfuric acid) in my case. What by-product is being created
What volume of 0.128 M Li2S solution is required to completely react with 170. mL of 0.128 M Co(NO3)2?
What volume of .01M HCL must be added to 20 ml of .04M phosphate buffer, pH 6.50, to reduce the pH to 5.5. pK of phosphate buffer is 7.20
Which of the following solutes dissolved in 1.0 kg of water would be expected to cause the water to freeze at the lowest temperature
Predict the products of acid-base reaction of CH3COOH with CH3-NH2 and draw the molecules.
A gas in thermodynamical equilibrium consists of a mixture of 75 % hydrogen and 25 % helium in mass. Calculate the abundances in partical fractions.
Calculate the partial pressure in atmospheres of O2 in the air outside an airplane cruising at an altitude of 10km where the atmospheric pressure is 190.0 mmHg.
Calculate the volume of dry CO2 produced at body temperature (37 degree C) and 0.990 atm when 24.0 g of glucose is consumed in this reaction.
The partial pressures of gas B dissolved in liquid A at 298 K are listed in the table below. If the vapor pressure of pure B at this temperature is 9500 Kpa, does this solution obey Raoult's Law
What is the sequence of the peptide? Use the one-letter abbreviations for the amino acids, and do not use dashes.
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