Popular questions and responses by Samboni
  1. Chemistry

    A saturated solution is prepared by adding excess PbI2(s) to distilled water to form 1.0L of solution at 25oC. The concentration of Pb+2 in the saturated solution is found to be 1.3*10-3 M. Calculate the Ksp for PbI2(s) in water at 25 °C R/

    asked on December 22, 2014
  2. Chemistry

    Comment on the solubility of the following liquids. State whether at room temperature you expect the components to be highly soluble or almost insoluble, and choose the appropriate reasons why. HINT: It may behoove you to draw the Lewis structure for each

    asked on December 22, 2014
  3. Chemistry

    Consider the molecules ether (CH3OCH3), ethyl alcohol (CH3CH2OH), and propanol (CH3CH2CH2OH) (not isopropanol!). The boiling point of ether is -25 degrees while the boiling point of ethyl alcohol is 78 degrees. How would you explain the difference in

    asked on December 22, 2014
  4. Chemistry

    Calculate the planar packing fraction (fractional area occupied by atoms) of the (110) plane of aluminum at 300K 0.554 atm/cm Calculate the linear packing density (atoms/m) in the [100] direction of Al at 300K. 2.47⋅10^9 m

    asked on December 22, 2014
  5. Chemistry

    The plutonium phase diagram is shown below. Solid phases A, B, C, D, E, F, and G are present under various condition of temperature and pressure. Consider increasing the pressure on a plutonium sample at 560 K from P1 to P2. Are phases D, F, and G ever

    asked on December 22, 2014
  6. Chemistry

    A material exhibits an optical band edge at ν=5∗1014 Hz (s-1). a) What is the band edge (in eV) of this material? Answer:2.07; E=hc Above what wavelength do you expect the material to be transparent? Express your answer in nm. Answer: 599.6: landa= C/V

    asked on December 22, 2014
  7. Science - MIT

    Which of the following is a possible set of n, l, mi, and ms quantum numbers for the last electron added to form a gallium atom (Z=31)? 4,1,1,1/2

    asked on December 22, 2014
  1. Science

    E=qV E=-k((1/nf^2)-(1/ni^2)) V=(-k/q)(1/25-1/1)*(24/25) V=(2.18e-18/1.602e-19 J)*(24/25) V=13.1 Volt 13.1 eVolt

    posted on December 22, 2014