Chemistry

What is the total moles of ions in 500 mL of 0.120 M Ca(NO3)2?

how would i calculate this? thanks.

  1. 👍 0
  2. 👎 0
  3. 👁 83
asked by Sean
  1. I haven't done chemistry for a while, but here's my best guess:

    M = mol/L so 0.120 M means there is 0.12 moles of Ca(NO3)2 in a liter. The question ask for 500 mL, which is half of a litter, so I would just divide 0.12 by two and get 0.06 moles of Ca(NO3)2 in 500 mL.

    Again, I'm not 100% sure, but it sounds reasonable to me of how I arrive to this answer.

    1. 👍 0
    2. 👎 0
    posted by Jake1214
  2. OK so far but didn't go far enough.
    The question is for total mols of ions.
    So you have 0.12 mol/L or 0.06 mols/500 mL.
    There will be 0.06 mols of Ca^+2, and 2*0.06 mols NO3^- = 0.12 mols NO3^-. The total is 0.06 + 0.12 = 0.18 mol Ca + NO3^-.

    1. 👍 0
    2. 👎 0
    posted by drbob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Posted by Jenni on Monday, December 13, 2010 at 3:32pm. Determine the molarity of nitrate ions in a solution prepared by mixing 25.0 mL of 0.50 M Fe(NO3)3 and 35.0 mL of 1.00 M Mg(NO3)2 Please explain fully do not know where to

    asked by Jenni on December 14, 2010
  2. Chemistry

    (0.75 moles Al(NO3)3/L Al(NO3)3) x 0.040 L Al(NO3)3 = ??moles Al(NO3)3 I am unsure how to find the factor to convert moles Al(NO3)3 into moles NO3. i think that if i do the first section, you get .03 moles as your answer for moles

    asked by M on August 23, 2011
  3. college chemistry

    How many total moles of ions are released when the following sample dissolves completely in water: 5.15x10^-3 g Ca(NO3)2

    asked by KELLY on September 26, 2010
  4. College Chemistry

    You have combined 1.218 moles of calcium ions and 0.943 moles of lithium ions in enough solvent to make 500.00mL of solution. What is the mole fraction of lithium ions in this solution? What type of problem is this and how do I

    asked by Jacob on June 5, 2017
  5. Chemistry

    1. If two moles of ZnCl2 separate into Zn+ and Cl- ions, how many moles of Zn+ ions are present? 2. How many moles of NO3- are present in one mole of Mg(N03)2? The answers to both of these are 1 mole, right?

    asked by G on April 7, 2015
  6. AP Chemistry

    Consider the following reaction: PbCl2 + 2 NaOH → Pb(OH)2 + 2 NaCl What would be the major species observed floating in solution after one mole of PbCl2 and 2 moles of NaOH are mixed in aqueous solution? 1. Na+ ions, Cl− ions

    asked by Sam on April 18, 2016
  7. Chemistry

    Consider the following reaction: PbCl2 + 2 NaOH -> Pb(OH)2 + 2 NaCl What would be the major species observed floating in solution after one mole of PbCl2 and 2 moles of NaOH are mixed in aqueous solution? 1. Na+ ions, Cl− ions

    asked by Cher on April 5, 2010
  8. Chemistry

    A 50.0 −mL sample of 1.50×10−2 M Na2SO4(aq) is added to 50.0 mL of 1.23×10−2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains unprecipitated? Calculate the moles of Ca(NO3)2 you have (concentration * volume in L). Moles

    asked by K on March 31, 2018
  9. Chemistry

    Find the mininum ammount of 5.0 M HNO3 needed to dissolve 2.72 g of Cu (s). I have the balanced equation here: 2NO3-(aq)+8H+(aq)+3Cu(s)-->2NO(g)+4H2)(l)+3Cu2+(aq) Obviously it is a 2 moles NO3- to 3 moles of Cu (s) ratio. I

    asked by Phat Pat on May 7, 2010
  10. chem

    How many moles of ions are there in .2 mol of lithium oxide? I need help again... Strictly speaking, Li2O is a solid and in that form it is not ionized. To get ions from it, you must dissolve it in water, and that causes it to

    asked by Laura on August 29, 2005

More Similar Questions