Chemistry

a) moles of malachite in 1g:

1g / (221.12g/mol) = .004522 mol


(b) moles of CuO produced:

.72g / (79.55g/mol) = .009051 mol


(c) ratio of moles of CuO produced per moles of malachite decomposed:


2CuO/CuCO3(OH)2 2*79.5/221.1 = 0.719


3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO₂ is also a product of the decomposition.

CuCo3*Cu9OH)2 -----> 2Cuo+CO2+H2O

4. Predict the mass of CuO expected to result from the decomposition of the malachite, based on the balanced equation.

5. Compare the mass obtained from the mass predicted, and discuss reasons for any discrepancy.

  1. 👍 0
  2. 👎 0
  3. 👁 431
asked by Sally
  1. I THINK I've taken care of this at the original post.

    1. 👍 0
    2. 👎 0
    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    I need to write a balanced equation for this problem and am having difficulty doing so. The question is this: use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition

    asked by Laura on February 22, 2009
  2. Chemistry

    The question is with a lab that I have already done. Here are my numbers moles of malachite in 1g 221.12 moles of CuO produced 141.57 ratio of moles of CuO produced per moles of malachite decomposed 79.55 Use the mole ratio of CuO

    asked by Laura on February 22, 2009
  3. Chemistry

    I am trying to answer my questions for thermal decomposition of malachite lab. I have moles of malachite in 1g= 0.0045 moles of Cuo produced= 0.0009 ratio of moles of Cuo produced per moles of malachite

    asked by valerie on September 27, 2009
  4. Chemistry

    I need to write a balanced equation for this problem and am having difficulty doing so. The question is this: use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition

    asked by Laura on February 22, 2009
  5. chemistry

    3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO₂ is also a product of the decomposition. CuCo3*Cu9OH)2 -----> 2Cuo+Co2+H2O

    asked by Sally on May 3, 2010
  6. chemistry

    How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and 2.00 moles of water? Question 29 options: 4.00 mol 1.67 mol 7.50 mol 3.33 mol 10.0 mol

    asked by beverly on November 5, 2015
  7. Chemistry help

    Hello. Can I get someone to help me set up these problems? 1.) How many moles of N are there in 2.6 moles of NHO3? 2.) How many moles of C2H6 (g) are consumed when 4.4 mol CO2 (g) are produced? 3) How many milliliters of 0.80 M

    asked by Nazr on February 25, 2007
  8. chemistry

    The pH of a solution prepared by mixing 45 mL of 0.183 M KOH and 65 mL of 0.145 M HCl is i solved it but my answer is wrong. the right one is 1.97. am i missing a step? moles of HCl left over = (moles of HCl) – ( moles of KOH)

    asked by ben on November 23, 2010
  9. Chemistry

    How many moles of sodium chloride must be added to an aqueous solution that contains 2.0 moles of silver nitrate in order to precipitate 0.50 moles of silver chloride? A) 0.25 mol B) 0.50 mol C) 1.0 mol D) 2.0 mol E) 1.5 mol The

    asked by Jill on March 22, 2009
  10. Chemistry (stoichiometry

    (This homework question has been removed due to a copyright claim submitted by K12, Inc.) _----------_ [" okay this is what i got and im not sure if i did it right nor do i know if i answered everything the questions wanted so

    asked by Samantha on December 17, 2010

More Similar Questions