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Consider the case is which the volume and temperature of ONE mole of an ideal gas depends explicitly on the time, t. obtain an equation (a differential equation essentially) that relates the rate of change in the pressure to the rate of change of the volume and the temperature.
Than consider the scenario in which the temperature is cooling exponentially toward absolute zero with time constant \(\tau_{T}\)
. ( This is known as Newtonian cooling) Simultaneously the piston is being driven in so that the volume decreases exponentially to zero with a time constant
\(\tau_{V}\)
. Obtain an expression for the rate at which the pressure changes in this case. What is the time dependence of pressure when \(\tau_{T}=\tau_{V}\)
What is the molality of a solution prepared by dissolving 10.0 grams of methylamine, CH3NH2, in 50.0 mL of ethanol, C2H5OH?
What difficulties could you encounter trying to determine the cp of a chunk of metal that has a hollow center?
Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. H+ + H2O2 ? H3O2+ (rapid equilibrium)
The natural abundance of 13C is only 1.1%. Furthermore, its sensitivity in NMR spectroscopy (a measure of the energy difference between a spin aligned with or against an external magnetic field)
Exactly 5.00 days later, the rate of decay was found to be 177 disintegrations per minute. Calculate the half-life, in days, for the decay of this sample.
An unknown gas X effuses 1.65 times faster than C3H8. What is the molecular mass of gas X?
Glycine, an amino acid, has the formula C2H5NO2. How many glycine molecules are in 50.0 mg of glycine? a. 7.50 x 101 b. 4.01 x 1023 c. 4.01 x 1020 d. 9.02 x 1023 e. 9.02 x 1020
Consider the following equibrium: CO(g) + 3H2(g) = CH4(g) + H2(g) Initially, 0.200 mol CO and 0.600 mol H2 are placed in a 2.00 L container.
a balloon is filled to a volume of 7.00 times 10^2 mL at a temperature of 20.0 degrees celcius. the balloon is then cooled at constant pressure to a temperature of 1.00 times 10^2 K. what is the final volume of the balloon?
when 56.6g of calcium and 30.5g of nitrogen gas underfo a reaction that has a 93.0% yield, what mass g of calcium nitride forms.
find the number of representative particles in each substance a)3.00 mol Sn b)0.400 mol KCI c)7.50 mol SO2 d)4.80x103 mol NaI
1. H2O2(aq) acting as an oxidizing agent in acidic solution. Write the balanced half reaction?
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