Elva

Popular questions and responses by Elva
  1. Chemistry

    Write the net ionic equation for this reaction occurring in water: Sodium phosphate and calcium chloride are mixed to form sodium chloride and calcium phosphate. 1. No reaction occurs. 2. 2Na3PO4 + 3Ca2+ -> 6Na+ + Ca3(PO4)2 3. 2 PO3−4 + 3Ca2+ ->

    asked on October 16, 2010
  2. Chemistry

    The net ionic equation for ALL aqueous reaction of strong acids and strong soluble bases that form soluble salts is 1. the formation of H2O from H+ and OH−. 2. the formation of water from the ele-ments. 3. the formation of water and the corre-

    asked on October 16, 2010
  3. Chemistry

    Given the following list from the activity series of metals (from most active to least active) K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg which reaction would you NOT expect to occur? 1. All of the listed reactions will occur. 2. Na(s) +Mn2+(aq) -> Na+(aq) +Mn(s)

    asked on October 16, 2010
  4. Chemistry

    In the reaction 2Mg + SnCl4 −> 2MgCl2 + Sn , how many electrons are involved in the conversion of SnCl4 to Sn? 1. three 2. one 3. four 4. two

    asked on October 16, 2010
  5. Chemistry

    I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

    asked on November 3, 2013
  6. Chemistry

    I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

    asked on November 2, 2013
  7. Science

    I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

    asked on November 3, 2013
  8. Chemistry

    Which of the following is best described as an acid-base reaction? 1. 2HgO -> 2 Hg + O2 2. NH3 + H2O -> NH+4 + OH− 3. KCl + NH4NO3 -> KNO3 + NH4Cl 4. Ca + 2H2O -> Ca(OH)2 + H2 5. NaCl + AgNO3 ->NaNO3 + AgCl How do u tell if it is a salt or not?

    asked on October 16, 2010
  9. Chemistry

    If aqueous hydrofluoric acid is reacted with sodium hydroxide, which of the following substances are in the net ionic equation? 1. fluoride ion, hydronium ion, and water 2. fluoride ion, hydroxide ion, hydronium ion, and water 3. hydrofluoric acid, sodium

    asked on October 16, 2010
  10. Algebra

    I'm having trouble with this literal equation. r^2/r^2+a^2=w/x solve for w. Thanks so much for the help

    asked on September 4, 2013
  11. Chemistry

    I need help with this chemistry flame test lab discussion question. "List the metals used in this lab in increasing order of the energy of the light emitted." We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2. I'm not completely sure how

    asked on November 2, 2013
  1. Algebra

    P.S I attempted it and I got r^2x/r^2+a^2=w

    posted on September 4, 2013
  2. improving your writing

    I have the same assignment,I was wondering what you had put down,I was thinking of just spliting the work between Ruth and Jack that way Ruth wont be too overwhelmed? yay or nay?

    posted on July 10, 2011
  3. Chemistry

    sponding salt. 4. the formation of the soluble salt.

    posted on October 16, 2010