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A 17.5 g quantity of dry ice (solid carbon dioxide) is allowed to sublime (evaporate) in an apparatus like the one shown in Figure 6.5. Calculate the expansion work done against a constant external pressure of 0.969 atm and at a constant temperature of 24°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas.
What is the concentration of protein A in the filtrate, as well as the concentrations of proteins B and C in the filtrate and retentate?
what is the enthalpy change for a reaction where the internal energy change is 58.0 kJ and the volume increase is 12.6 L? (1L * atm = 101.325 J)
The ball is used on the driveway at temperature of -7 degree C and feels flat. What is the actual pressure of the air in the ball ? What is the gauge pressure?
Calculate the probability of finding an electron that is described by this wavefunction in a volume of 1.0 pm3 (i) centred on the nucleus.
A brand of lunchmeat contains 0.11% by mass of a preservative, sodium benzoate, C6H5COONa. Health Canada recommends a an upper level intake of Na to be 2300 mg
The decomposition of hydrogen peroxid is second order in H2O2. If 50 grams of 30% hydrogen peroxide is placed in a beaker within a sealed environment, what will be the concentration of hydrogen peroxide
An unknown gas having a mass of 2.041 g occupies a volume of 1.15 liters at 0.974 atm and 20 degrees Celcius. Calculate the molar mass of the unknown gas.
If 69. J of heat are applied to 20. g of aluminum, by how much will the temperature of the aluminum increase? (The specific heat capacity of Al (s) is 0.89 J/(g °C).)
What is the mole fraction of methane in the mixture? (Assume that the water produced by the combustion is in the gaseous state.)
Calculate the ion mobility of 100nt long DNA molecules and single nucleotide molecules. Correlate this to the conductivity of the solution.
The products of the fusion are carbon-13 and a proton. a) Write a nuclear reaction for this process. b) How much energy is released when 1.00 g of B-10 is fused with alpha particles?
What mass of water (in grams) forms from the reaction of 2.49 L of hydrogen gas and 1.92 L of oxygen gas? Both gases are at 738 torr and 27.3 oC
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