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If this experiment was carried out precisely as directed in the procedure section by a student in Australia, for instance, must that student come up with a formula for the magnesium oxide other than MgO? Why not?
Consider the decomposition of calcium carbonate. Assume that ?H° = 177.8 kJ/mol and ?S° = 160.5 J/K·mol for the temperature range.
This solution was back-titrated with a 0.0370 M Ga3 solution until all the EDTA reacted, requiring 11.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
A class is provided with the same mass of pb(II) nitrate but different masses of sodium iodide. the masses of lead II iodide produced will be determined by weighing.
acetic acid has a Ka value of 1.8x10^-5. How many grams of NaC2H3O2 would have to be added to 100 ml of .1 M HC2H3O2 to prepare a buffer with a pH of 4.5?
A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. After 6.00 years, the activity of the sample declines to 2755 disintegrations per second. Calculate the half-life of curium-243. half-life
1. what mass of phosphorous trichloride forms when 125g of P4(S) reacts with 323g of chlorine gas?
HNO3 has 2 dissociating ions whereas Al(NO3)3 has 4, which should result in a higher conductance value. Would this have something to do with aluminum nitrate being paired with water as a solid?
At 2000°C the equilibrium constant for the reaction is Kc = 2.4 x 10^3. , 2 NO(g)-> N2(g) + O2(g) If the initial concentration of NO is 0.100 M, what are the equilibrium concentrations of NO, N2, and O2?
Calculate the amount of heat required to completely sublime 19.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.
Calculate the radius of a Au (gold) atom if Au atom has a face-centered unit cell ? it is given that its density = 19.32 g/cm 3 .?
The current concentration of carbon dioxide in the atmosphere is 378 ppmv. Annual anthropogenic additions to the atmosphere are about 8 Gt (as C) of which about 4 Gt are removed into the oceans and terrestrial environment.
Explain five observations which suggest that benzene should not be classed with the alkenes, however rather as a member of a separate class of "aromatic" compound, although the fact that its formula is often shown with three double bonds
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