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What is the label for the orbital shown here that indicates the type of orbital and its orientation in space?
The valve between a 5-L tank containing a gas at 9 atm and a 10-L tank containing a gas at 6 atm is opened. Calculate the final pressure.
The equilibrium constant Kc equals 1.6 10-2 at 200°C. What are the moles of substances in the equilibrium mixture at 200°C if we start with 0.021 mol HBr in a 1.3-L vessel?
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl. how many liters of H2 would be formed at 770 mm Hg and 16 degrees celcius if 26.5g of zinc was allowed to react
A biochemist wants to utilize the following oligopeptide for biochemical assays. Estimate the number of charges on this peptide at different pH conditions by considering the charge states of amino acid residues at pH 2, pH 7.4 and pH 10.
when 9.8 g of aluminum oxide (Al2O3) decomposes, how many grams of aluminum metal are produced?
How many grams of diphenyl (C 12H10) must be dissolved in 655 g of benzene to lower the freezing point by 3 .20ºC.
Calculate the concentrations of all species in a 0.260 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
a) Subtract blank value (0.2 mV) from each measured signal. Make graph to find volume % of C2H2 in unknown b) Use method of least squares to find uncertainties in slope & intercept of your graph & estimate the uncertainty in answer to a.
Write a balanced nuclear reaction for the production of dubnium-260 and neutron(s) by bombardment of californium-249 with high-energy
how many grams of lead (II) chloride is produced when 13.87 g lead (II) nitrate combines with hydrochloric acid to produce lead (II) chloride and nitric acid?
Carbon and silicon belong to the same group and are known to have similar properties. Do you think that silicon can replace the role that carbon
Calculate delta H of this reaction. Assume that the total volume is the sum of the individual volumes and the density and specific heat capacity of the solution are the same as for pure water. d for water=1.00g/mL; c for water=4.184 J/g degrees Ce..
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