Chemistry

posted by .

Consider the following reaction:

2Fe2O3 --> 4Fe + 3O2

∆Hrxn° = +824.2 kJ

The decomposition of 29.0 g of Fe2O3 results in

a. the release of 150 kJ of heat
b. the release of 12000 kJ of heat
c. the absorption of 12000 kJ of heat
d. the absorption of 150 kJ of heat
e. the absorption of 74.8 kJ of heat
f. the release of 74.8 kJ of heat

  • Chemistry -

    824.2 kJ x (29.0/2*molar mass Fe2O3) = ?+kJ energy.

    The sign of dH is +; therefore, it must be an absorption of energy. Calculate how much. It should be one of c,d,or e.

  • Chemistry -

    Thank you DrBob222

  • Chemistry -

    34.7Kj

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Consider the following reaction. 4Fe + 3O2=2Fe2O3 a. How many moles of O2 are required to react completely with 29.8 mg of Fe?
  2. College Chemistry

    Consider the reaction. 4Fe(s) + 3O2(g) ¨ 2Fe2O3(s) If 0.500 mol of Fe reacts with 0.400 mol of O2, what are the limiting reactant and the theoretical yield in moles of Fe2O3 for the reaction, respectively?
  3. Chemistry

    2Fe2O3 -> 4Fe+3O2 changeHrxn= +824.2 KJ The decomposition of 57.0 g of Fe2O3 results in The release of 23500 KJ of heat The absorption of 147 KJ of heat The absorption of 23500 KJ of heat The absorption of 294 KJ of heat The release …
  4. chemestry

    How many grams of O2 are needed to produce 45.8 grams of Fe2O3 in the following reaction?
  5. chemistry

    How many grams of O2 are needed to produce 45.8 grams of Fe2O3 in the following reaction?
  6. chemistry

    Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) …
  7. chemistry

    Am I correct? Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III)
  8. chemistry

    Consider the following reaction. 4Fe + 3O2 2Fe2O3 a. How many moles of O2 are required to react completely with 46.7 mg of Fe?
  9. Chemistry

    Consider the following reaction. 2Fe2O3 --> 4Fe+3O2 Hrxn=+824.2 The Formation of 21.0 of Fe results in 1)the release of 77.5 kJ of heat. 2)the absorption of 3.10 × 102 kJ of heat. 3)the release of 4330 kJ of heat. 4)the absorption …
  10. AP Chemistry Help!

    I had to conduct an experiment to find the enthalpy of reaction for : 4Fe + 3O2 + 6H2O ----> 4Fe(OH)3 In the experiment , I started with an inital temperature of 22.3 C and edned with 36.7 C so the delta T is +14.4C. Now it's telling …

More Similar Questions