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Why should an organization consider utilizing a systems analysis and design methodology when building a new system instead of building a system in any which way that seems to be fast and simple? What value is provided by using an engineering approach?
2 moles of ideal gas at 300K, with an initial volume of 25L, are compressed under an external pressure of 2800 torr. Assuming the temperature and the initial energy of gas do not change, what is the entropy change of this gas
For a van der Waals gas, use the thermodynamic equation of state to find [dU/ dV]T. Compare your result to the corresponding value of the same derivative for an ideal gas. Explain the difference.
A 15.6 mL sample of a 0.387 M aqueous hydrocyanic acid solution is titrated with a 0.346 M aqueous barium hydroxide solution. What is the pH at the start of the titration, before any barium hydroxide has been added
The permanganate ion is a common oxidizing agent. What is the reduction potential at 25C of MnO4-, H+/ Mn2+ couple at pH=6.00
For which of the following species is resonance an important property: HONO, HONO2, N3-, NO2-, NO2
How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.45 of with enough carbon monoxide to produce iron metal?
A certain substance has a heat of vaporization of 44.76 KJ/mol. At what kelvin temperature will the vapor pressure be 4.00 times higher than
What volume (in milliliters) of 0.250 M NaOH should be added to a 0.120 L solution of 0.023 M glycine hydrochloride
A solution is made by mixing 15.0 g of NaOH and 71.0 mL of .19 M HNO3. Calculate the concentration of Na+ ion remaining in solution.
The mass spectrum of an organic compound shows the relative abundance of M to be 34.29% and M+1 to be 8.901%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundance: 12C is 98..
The activation energy of a certain reaction is 77.3 kj/mol. How many times faster will the reaction occur at 41 degrees celcius than at 0 degrees celcius?
Consider the diffusion of dopant element A into crystalline water. The dopant rich coating is considered as a large source of A relevant to the amount of A diffused, so that the surface concentration CAs can be considered a constant.
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