Chemistry

2H20(l) = 2H2 (g) +O2 (g)

For the above, if 1.50 mg of water is decomposed, what mass of hydrogen is procduced? (1 Mg=10^6g=1 metric ton)?

What is the answer and what is the best way to solve this?

  1. 👍 0
  2. 👎 0
  3. 👁 87
asked by Carli
  1. I am confused because you have used mg and Mg interchangeably. Here is the general procedure.
    1. You have the balanced equation.
    2. Convert grams water to moles. mols = grams/molar mass.
    3. Using the coefficients in the balanced equation, convert moles H2O to moles H2.
    4. Now convert moles H2 to grams. g = moles x molar mass.

    1. 👍 0
    2. 👎 0
    posted by DrBob222
  2. I see your post piggy backed onto Jill's question. Repost here if you still have trouble.

    1. 👍 0
    2. 👎 0
    posted by DrBob222
  3. Thanks for the info.
    I came up with 0.1678475161 and rounded it to .17 mg H2. Am I on the right track and did I include the correct amount sig figs?

    1. 👍 0
    2. 👎 0
    posted by Carli

Respond to this Question

First Name

Your Response

Similar Questions

  1. CHEMISTRY

    2H20(l) = 2H2 (g) +O2 (g) For the above, if 1.50 mg of water is decomposed, what mass of hydrogen is procduced? (1 mg=10^6g=1 metric ton)? I came up with 0.1678475161 and rounded it to .17 mg H2. Am I on the right track and did I

    asked by Carli on May 4, 2010
  2. Science grade 8

    Which chemical equation is balanced? 1. H20 H 2 + 20 2 2. 2H20 2H2 +0 2 3. 2H20 H2 + 20 2 4. H2O 2H2 + 20 2 Im super confused... But I think its 4?? Im probably wrong so please help?!?!

    asked by Amy on March 23, 2015
  3. Chemistry

    Predict the standard cell potential and calculate the standard reaction Gibbs free energy for galvanic cells having the following cell reactions: a.)3Zn + 2Bi3+ = 3Zn2+ + 2Bi b.)2H2 + O2 = 2H20 in acidic solution c.)2H2 + O2 =

    asked by Anonymous on February 27, 2014
  4. SCIENCE PLEASE HELP ME!!!!!!!! ASAP PLEASE PLEASE

    Which chemical equation is balanced? (1 point) H20 H2 + 2O2 2H20 2H2 + O2 2H2O H2 + 2O2 H20 2H2 + 2O2 i think its c

    asked by Anonymous on April 9, 2014
  5. chemistry

    Please help! N2H4 is decomposed in a closed container according to this reaction: N2H4 → N2 + 2H2 . If the temperature is constant and the initial pressure of N2H4 is 800mm, what will the pressure in millimeters be after the

    asked by Anonymous on April 21, 2017
  6. chem

    Identify the correct equilibrium constant, Keg, expression 2H2(g)+02(g)2H20(l)?

    asked by tracy on April 24, 2011
  7. someone correct my work please? fun, fun chemistry

    Okay. I'm very, very confused. The initial question is: predict the products of the electrolysis of a 1 mol/L solution sodium chloride. This is my work: The four different possible equations are: 2H2o + 2e- -------> H2 + 2OH- (V=

    asked by Rienna on January 30, 2007
  8. chem

    N2H4 is decomposed in a closed container according to this reaction: N2H4 → N2 + 2H2 . If the temperature is constant and the initial pressure of N2H4 is 800mm, what will the pressure in millimeters be after the decomposition to

    asked by tomas on May 1, 2017
  9. chemistry

    if you had 120 grams of sugar and all of it decomposed,how many moles of water were decomposed?

    asked by jaquelin on January 30, 2012
  10. chemistry

    Why is balanced chemical equation for H2O written 2H2+0>2H20 and not H20>H20?

    asked by jo on September 21, 2009

More Similar Questions