Chemistry

Hydrogen Peroxide decomposes to produce oxygen gas and water, What mass of hydrogen peroxide (H2O2) nust decompose to produce 0.77 grams of water?

  1. 👍
  2. 👎
  3. 👁
  1. Just follow the steps in this worked example.
    http://www.jiskha.com/science/chemistry/stoichiometry.html

    1. 👍
    2. 👎
  2. 1. Write a balanced equation :
    2H^2O^2---O^2+ 2H^2O
    2. Find the molar mass (g/mol) of each:
    34.02 32.00 18.02
    3. Divide grams water by the molar mass of water:
    .77g (1mol/18.02g) ~ .0427 mols
    4. Use the mole ratios to find the number of hydrogen peroxide moles:
    2H^2O^2---O^2+ 2H^2O; they are the same.
    5. Multiply moles by molar mass of hydrogen peroxide.
    .0427 mol (34.02g/1mol)
    6. Answer
    1.454g H^2O^2

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    Hydrogen peroxide can be prepared in several ways. One method is the reaction between hydrogen and oxygen, another method is the reaction between water and oxygen. Calculate the ΔG°rxn of each reaction below? 1) H2(g) + O2(g)

  2. chemistry

    When hydrogen peroxide (H2O2) is used in rocket fuels, it produces water, oxygen, and heat. 2H2O2(l)⟶2H2O(l)+O2(g)ΔH=−196kJ How many kilojoules are released when 2.65 moles of H2O2 reacts? How many kilojoules are released

  3. Chemistry

    What mass of hydrogen peroxide must decompose to produce 0.77 grams of water(H2O)?

  4. Chemistry Balancing Equations

    Can you please tell me if these are correct? 1. Sodium Hydrogen Sulfite reacts with hydrochloric acid to produce sulfur dioxide gas, water and sodium chloride NaHSO3 + HCl -----> SO2 + H2O + NaCl 2. Sodium nitrate reacts with

  1. CHE1

    Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2(l) → 2H2O(l) + O2(g) ΔH = -196 kJ Calculate the value of q (kJ) in this exothermic reaction when 4.60 g of hydrogen peroxide

  2. Chemistry

    Determine the molarity of a 15.0 % by mass Hydrogen Peroxide solution. The density of Hydrogen Peroxide is 1.054 g/mL. The 15.0% by mass can be broken apart into 15.0 g Hydrogen Peroxide and 100.0 g solution. Use the density of

  3. Science

    A sample of water decomposes to make 4g of hydrogen gas and 32g of oxygen gas. What mass of water decomposed? How do you know? Hint: The water decomposes into ONLY hydrogen and oxygen, and the total mass does not change in the

  4. Chemistry

    Hydrogen peroxide(H2O2) slowly decomposes to form water and oxygen gas. Calculate the mass of Hydrogen peroxide needed to obtain 0.460L of oxygen gas at STP

  1. oxidation

    In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is... ? Fe(II) ==> Fe(III) H2O2 ==> H2O. Fe goes from +2 to +3, that is a loss of electrons, so it is

  2. Chemistry

    The following reaction represents the decomposition of hydrogen peroxide 2H2O2 -> o2 (g) + 2H2O (l) How many molecules of water are produced from the decomposition of 3.4g of Hydrogen peroxide, H2O2? Please walk me through this

  3. chemistry

    Given the following equations: 2 H2O2 (aq) → 2 H2O (l) + O2 (g) and C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (l) The first reaction is the decomposition of hydrogen peroxide into water and oxygen gas. The oxygen gas generated

  4. Chemistry

    The following reaction represents the decomposition of hydrogen peroxide: 2H2O2 -> O2 (g) + 2H2O (l) How many molecules of water are produced from the decomposition of 3.4g of hydrogen peroxide, H2O2? Please help, I got 0.02

You can view more similar questions or ask a new question.