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Explain when an additional mol of gas is added at constant temperature and volume to a flask containing 2.00 mol of gas at 25oCand 1.00atm pressure, the pressure increases to 1.60 atm.
Write the half reactions and the overall cell reaction for each of the following voltaic cells: a)Al(s)/Al^3+(aq)//Cd^2+(aq)/Cd(s) b)Sn(s)/Sn^2+(aq)//Fe^3+(aq),Fe^2+(aq)/C (graphite)
A sample of unknown hydrate of FeCl3 weighs 8.693g. After heating the sample to constant mass, the remaining anhydrous salt weighs 5.216g. What is the experimental formula for the hydrate
Each square meter of an actively growing forest fixes on a average each year 1 kg of carbon from the atmosphere into plant matter through photosynthesis. The atmosphere is approximate 20% of oxygen, 80% of nitrogen, and but contains 0.046% of carb..
Calculate the amount of heat required to heat a 3.6 kg gold bar from 25 C to 64 C. Specific heat capacity of gold is 0.128 j/g C.
A two-component mixture is analyzed by gas chromatography with flame ionization detection. compound x has a retention time of tr= 11.53 min with N= 16,520 theoretical plates
What is the molarity of chloride ion when a mass of 27.1 g of calcium chloride is diluted to a volume of 250 mL in a volumetric flask? The molarity of chloride ion in the solution is _____x10^____2 M.
Balance the following redox equation using the smallest integers possible and select the correct coefficient for the Mn2+. Mn(s) + Cr2O72-(aq) + H+(aq) ? Mn2+(aq) + Cr3+(aq) + H2O(l)
Which solute would provide the shaper end point in a titration with 0.1 M HCl: use ka or kb values to answer this question. (a) 0.10 M NaOCl or 0.1 M hydroxylamine (b) 0.10 M NH3 or 0.10 M sodium phenolate (c) 0.1 M methylamine or 0.10 M hydroxyla..
if 0.100 m NaCl is added slowly to a beaker containing both .120m AgNO3 and .150m Pb(NO3)2 at 25 celsius which will precipitate first AgCl or PbCl2?
Calculate [Cr^3+] in eequilibrium with Cr(OH)4- when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at pH 10.0
Calculate the degree of dissociation (he fraction of molecules dissociated) for the acid in this solution. (You may assume that the mean ionic activity coefficient has a value of 1). (c) From the degree of dissociation, determine the acidity const..
how many ml of concentrated sulfuric acid would be required to mae 1 L of 0.2N solution
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