Post a New Question

Chemistry

posted by .

Here's a molar heat problem I just have one question on. How much heat will be transferred if 2 moles of hydrogen reacts with excess oxygen according to the reaction below?

2H2 + O2 yields 2H20 + 572 kJ

The answer according to my answer key is

2 mole H2 x 572 kJ/2moles H2.

I understand where the first 2 moles comes from, but what about the second one on the bottom of the equation? I heard there's a chart online that tells you where to find this value. Could you show me a link if there's a such chart? Thanks for your help!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry II

    The total volume of hydrogen gas needed to fill the Hidenbrug was 2.0e8 L at 1.0 atm and 25 degrees Celsius. How much heat was evolved when the Hidenburg exploded, assuming all the hydrogen reacted?
  2. Chemistry

    I have to solve this combustion problem using Dimensional Analysis and molar heat: 2 C2H6 +7O2 yields 4 CO2 + 6H2O + 3120 kJ The question is to discover how much heat is produced along with 8 moles of water in this reaction. My problem …
  3. chemistry

    1) If a total of 13.5 mol NaHCO3 and 4.5 mol of C6H8O7 react, how many moles of COs and NA3C6H5O7 will be produced?
  4. chemistry

    CH3OH(g) ----> CO(g) + 2H2 (g) (delta H =+90.7k) A) is heat absorbed or released in the course of this reaction?
  5. chemistry

    Consider the following reaction: 2H2 (g) + O2 (g)  2H2O (l) ΔH = -572 kJ a. How much heat is evolved for the production of 1.00 mol H2O (l)?
  6. Chemistry;HELP

    Volume Problems Answer the following questions. Scan and upload your questions and answers to your student section labeled Volume Volume Problems. Identify the following chemical equations by type. 1. If an electric discharge produces …
  7. Chemistry

    Heat is given off when hydrogen burns in air according to the equation: 2H2 + O2 ---> 2H2) What is responsible for the heat?
  8. Chemistry

    Identify the following chemical equations by type. 1. If an electric discharge produces 800 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required?
  9. Chemistry

    1. How many moles of ammonia NH3 are produced when 0.45 moles of nitrogen N2 reacts?
  10. Chemistry

    How many joules are required to raise the temperature of 450mL of water from 30 °C to 100 °C?

More Similar Questions

Post a New Question