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Molecular hydrogen can be made from methane gas by the reaction below. How is the rate of disappearance of CH4 related to the rate of appearance of H2. [CH4] /t
CH4 (g) + H2O (l) ? CO (g) + 3H2 (g)
A) + ? [H2]
B) + 3 ? [H2]
C) + 1? [H2]
D) none of these
buffer that has a pH of 9.80 and an osmotic pressure of 1.04atm at 298 K. What masses of HCN and NaCN should you use to prepare the buffer? mHCN, mNaCN =
Determine the answer to each of the following: a) the number of unpaired electrons in the Mn2+ ion: show valence orbital diagram b) a possible set of quantum numbers (n, l, ml, ms) for an electron occupying a 5p orbital
What difference do the + and - make? do you add/subtract protons? Which of the following species has the largest radius. A. Li+ B. Na+ C. K+ D. Ar E. Cl-
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
explain why the compound carbon tetrachloride is completly nonpolar , depite having four polar bond whereas the compound
What is the theoretical yield of aspirin if 190 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride?
hydroxylamine is titrated to the equivalence point with 35.8 m of .15 M HCl. What is the pH at the equivalence point?
a gas has a pressure of 5.51981 atm when its volume is 3.16 l. what will the pressure be when the volume is changed to
What mass of zinc in grams is required to produce 3.2L of H2 (g) from the following reaction at 78 degrees celcius and 790mmHg? Please explain
How many moles of each are present in the eq mixture b)Calculate the equilibrium constant
Given this reaction at equilibrium N204?-? 2N02 calculate the equilibrium constant (Keq) If the concentration of N204 and NO2 are 0.0238 M and 0.196 M respectively
a 1.20 gram sample of dry ice is added to a 755ml flask containing nitrogen gas at a temperature of 25.0 degrees
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