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A sample of 5.0mol CO2(g) is originally confined in 15dm^3 at 280 K and undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 3.0.Calculate q,w,delta T,delta U,and delta H.(The final pressure of the gas is not necessarily 78.5kPa.)
Elementary mercury was first discovered when a mercury oxide was decomposed with heat, foarming mercury metal and oxygen gas. Wehn 0.24-g sample of the mercury oxide is heated, 0.189-g of mercury metal reamins.
Ethanol (molar mass = 46 g/mol) can be dehydrated to yield ethene (molar mass = 28 g/mol) by heating it with an excess of concentrated sulfuric acid (acting as a catalyst).
calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400.0g of H2O
Using 1-butanol as the only organic starting material, write out a series of reactions that will produce this molecule:
A standard solution was made when 1.132g of pure copper wire (MM= 63.546g/mol) was weighed, dissolved in concentrated HNO3, and diluted to 100 mL. What is the concentration of the stock solution
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. Calculate the energy in J of the electron when it is in the n= 4.00 level.
What is the mass in grams of 2.50 x 10^12 lead (Pb) atoms. Enter your answer in scientific notation.
the activation energy for the isomerization of methyl isonitrile is 160 kJ/mol. Calculate the fraction of methyl isonitrile molecules that has an energy of 160.0 kJ or greater at 500 K.
If 3.55 g of CuSO4 are dissolved in 925 mL of 0.30 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium Kf, Cu(NH3)42+= 1.1 x 1013 . Assume that most of the Cu2+ is converted to the complex since K is a very large number...
A solution which contains 41.0 g of an unknown molecular compound in 312 g of water freezes at -2.23°C. What is the molar mass of the unknown?
If 0.487 grams of AgNO3 is dissolved in 20 ml of water, how many moles of silver ions will be present in each millimeter?
What speed would an O2 molecule have if it had the same momentum as a photon of 700 nm wavelength
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