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Sketch the [1-11] direction within the (110) plane relative to an fcc unit cell. Include all atom-center positions within the plane of interest.
Calculate q, the fraction of solute that would remain in the water under each of the following extraction conditions: Three extractions with 100 mL of ether.
What is the ionization energy of rubidium atoms in kJ/mol if light with lamda=58.4nm produces electrons with a velocity of 2.450*10^6m/s? ( the mass ofan electron is 9.109*10^-31kg)
Can the concentration of nickel ion be reduced to 1.0 x 10-5 M by precipitation of the nickel ion as nickel hydroxide without precipitating the calcium ion as calcium hydroxide. The Ksp of calcium hydroxide is 6.5x10-6 and the Ksp of nickel(II) hy..
Write equations and show how the following molecules can be prepared from any organic and inorganic reagents.
A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl. The Ka for HC7H5O2 is 6.5 x 10-5.
A 10.00mL aliquot of a weak base is titrated with HCL. The equivalence point is reached after 17.21mL of 0.4332 mol/L HCL has been added. The pH is equal to 10.03 after 5.00mL of HCL was added. Determine
The normal boiling point of bromine is 58.8°C. Given that the vapor pressure of methanol is 75.0 torr at 2.5°C, calculate the molar enthalpy of vaporization of bromine.
Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. what is the pecentage yield of 10.1g
Another student was in a hurry and stopped heating, even though bubbles were still emerging from the rubber tubing. 3.) A student used the measure of Flask no.1 to be 250mL, without measuring the volume as directed
calculate the volume, in liters, of each of the following solutions that provides the given amount of solute: a)5.00 mol of NaOH from a 12.0 M solution. b)15.0 g of Na2SO4 from a 4.00 M solution. c)28.0 g of NaHCO3 from a 1.50 M solution.
Consider the following approximate figures relating to cigarette smoking and cancer. The death rate in the US population of 270 million is 15 deaths per 1000 persons per year. One-fifth of these deaths are from cancer and one-fourth of the cancer ..
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