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Sodium borohydride reacts very slowly with ethanol to evolve a gas. Write a balanced equation for this reaction.
A sample of neon (Ne) occupies 1700 mL at STP. At constant pressure, what temperature is necessary to increase the volume to 2100 mL?
Calculate the concentrations of all species in a 1.01 M Na2SO3 (sodium sulfite) solution
at 25 c and 1.0 atm pressure, it is found that 2.24 L of gas weighs 1.56g. The molar mass of the gas is?
Calculate the equilibrium constant, Ke, for the reaction assuming the concentrations for reactants and products are the following
The Common Ion Effect. What is the pH of a solution that contains 0.250-M benzoic acid and 0.600-M sodium benzoate?
Consider a binary liquid mixture A and B, where A is volatile and B is nonvolatile. The composition of the solution in terms of mole fraction is xA = 0.045 and xB = 0.955
What is the ppm concentration? The molar extinction coefficienet is 87,000 M^-1cm^-1 and the molecular weight is 407.98 g/mol. The density of water is 1.00 g/mL.
An ice cube of mass 9.0 is added to a cup of coffee, whose temperature is 85 and which contains 110 of liquid. Assume the specific heat capacity of the coffee is the same as that of water.
Assume that the H2O2 solution has a density of 1.0g/cm3. What would the mass of 35cm3 of the H2O2 solution be?
A solution is prepared by dissolving 19.9 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 15.00 mL sample of this stock solution is added to 59.00 mL of water.
what is the bp of its enantiomer?What optical rotation would be observed if 7.2 g of (S)-amine were mixed with 7.2 g of the (R)-amine?
A solution is prepared by dissolving 27.1 g urea, (NH2)2CO, in 171.2 g water. Calculate the boiling point of the solution. Urea is a nonelectrolyte.
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