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From the time the mass of the flask is first measured until the time it is finally measured, it is handled a number of times with oily fingers. Does this lack of proper technique result in the molar mass of the vapor in the flask being reported as too high, too low, or unaffected? Explain.
For alloys of two hypothetical metals A and B. Find out composition of phase boundary (or solubility limit) for both and phases at this temperature.
calculate the molar concentration and the molarity of a sulfuric acid solution of density 1.198 g/mol,
Oxygen binds to the hemes in myoglobin and hemoglobin. However, when plotting oxygen's ability to bind to the protein vs. O2 concentration myoglobin and hemoglobin have dramatically different graphs. Explain this observation.
Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range.
In a Titration 33.21 mL 0.3020M rubidium hydroxide solution is required to exactly neutralize 20.00mL hydrofluoric acid solution. What is the molarity of the hydrofluoric acid solution?
Calcium Oxide reacts with water in a combustion reaction to producee calcium hydroxide: CaO(s) + H2O(l)----> Ca(OH)2(s)
Alcohols can be dehydrated to alkenes with sulfuric acid and alkenes can be used to prepare alcohols using sulfuric acid detail both mechanisms and explain the differences
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
If 0.600 gram of zinc is used, what is the amount of zinc chloride that is produced in the above reaction?
The mass spectrum of a compound that contains two bromine atoms gives isotope peaks with relative intensities of 1:2:1 for the M, M+2 and M+4 peaks, respectively. Explain why.
What is its fate as cooling occurs? To help address the question, calculate the equilibrium constant at 298 K and 1300 K for each reaction: ½ O2(g) + NO(g) ? NO2(g)2 NO2(g) ? N2O4(g)
Balance the following equations: a) Zn(s)+H2SO4(aq)--->ZnSO4(aq)+H2(g); b)Al(s)+H2SO4(aq)--->Al2(SO4)3(aq)+H2(g); c)K2SO4(aq)+BaCl2(aq)--->BaSO4(s)+KCl(aq); d) CaCO3(s)--->CaO(s)+CO2(g); e)Al2(SO4)3(aq)+KOH(aq)--->Al(OH)3(s)+K2SO4(aq).
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