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A catalyst may be defined as a substance that enhances the rate of a chemical reaction without being consumed in the process. By this definition, a catalyst would have an infinite lifetime. The ozone decomposition catalysts, however, have finite lifetimes. What are possible sinks for removal of the stratospheric catalysts, NO and .CL (Clorine radical)?
A glucose solution contains 51.0 g of glucose in 475 g of water. What is the freezing point?
what is the value of the ionization constant of the weak acid HX at 298 K? You may ignore the contribution of the self-ionization of water.
When 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas A in this mixture?
Calculate the number of moles of O2 required to react with phosphorus to produce 5.50 g of P4O6. (Molecular mass P4O6 = 219.9 g/mol.)
A solid laboratory sample contains two substances, lead(II) carbonate and potassium carbonate. A 5.000 g sample of this unknown was treated with aqueous nitric acid to dissolve it, then, after further treatment to adjust the acidity
Write the angular momentum quantum number (l), and magnetic quantum number (ml) of orbitals with principle quantum number (n) of 4.
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water. MnO4-(aq) + H2C2O4(aq) ? Mn2+(aq) + CO2(g)
A 1.80-L flask is filled with propane gas (C3H8), at 1.00 atm and -19.4°C. What is the mass of the propane in the flask.
triethylene glycol and heavy mineral oil are both high boiling, and high molecule solvents. What in their structural properties renders triethylene glycol
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25°C. Calculate the pH at 25°C for each of the following.
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K.
At high temperature, ammonia reduces copper(II) oxide to the free metal: 2NH3(g) + 6CuO(s) => N2(g) + 3Cu2O(s) + 3H2O(g) Step 2: 2NH3(g) + 3Cu2O(s) => N2(g) + 6Cu(s) + 3H2O(g)
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