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2 Sn + 2 H2SO4→ 2 SnSO4+ SO2+ 2 H2O
The activation energy of a certain reaction is 35.3 . At 20 , the rate constant is . At what temperature would this reaction go twice as fast?
Calculate the boiling point of a solution containing 50.0 g of KCl and 550.0 g of water. (kb for water is 0.51C/m).
If two liquids A and B that both boil at 100 ºC when pure form a non-ideal, positively deviating solution, what will be the boiling point for a 50:50 mixture of A and B?
The isotope 22Na has a half life of 2.60 years. How much of a 1.00 gram sample would be left after 1.00 yr
A student performed thin layer chromatography as explained in this experiment but made the following mistakes or changes in the procedure. In each case, define how the change/mistake would affect the Rf value:
A nonmetal oxide dissolves in water to give an acid. Show this for gaseous carbon dioxide by writing a balanced chemical equation. (b) A metal oxide dissolves in water to give a base. Show this for solid potassium oxide by writing a balanced chemi..
Gallium arsenide (GaAs) has the zinc blende structure. The gallium atoms are in FCC packing and the arsenic atoms occupy half the tetrahedral sites. Calculate the density of Gallium arsenide (GaAs) using the following data. Covalent Radius Ga 1.26 ..
Complete the two half reactions for the Pt electrode. (c) Write two correct Nernst equations for the cell voltage
Predict and sketch the likely splitting patterns and relative integrations for them most downfield resonance(s) in the proton NMR spectra of both primary alcohols below. Explain why the two patterns are different.
A gas mixture contains each of the following gases at the indicated partial pressures: N2, 221 torr; O2, 131 torr; and He, 131 torr.
A sample of 0.250 g of a pure radionuclide with a mass number of 244 was pragmatic to have an absolute activity of 4.45 micro curies. Determine the half-life of this radionuclide.
the osmotic pressure of the solution at 25C is found to be 0.614 mbar. Calculate the molecular mass of immunoglobulin G.
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