Log in
Chemistry
2
answers
0
watching
18
views

2C2H6 (g) + 7O2 (g) ?4CO2(g) + 6H2O (g) ?H = -1560 kJ

How many grams of ethane (30.07 g/mol) need to react to produce443 kJ of heat?

(Give your answer as a positive number, since you cannot releasenegative energy.)

Watch
2
answers
0
watching
18
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Get unlimited access
Already have an account? Log in
Share
Get unlimited access
Already have an account? Log in
Share
discord banner image
Join us on Discord
Chemistry Study Group
Join now

Related textbook solutions

Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232

Related questions

A Comparison of Average Enthalpy (BE) and Heat of Formation:

Please answer both A and B of the following problem below:

For the reaction: 2C2H6(g) + 7O2(g) - 4CO2(g) + 6H2O(g)

A) Predict the enthalpy of reaction from the average bond energies

B) Calculate the enthalpy of reaction from the standard enthalpies of formation of the reactant and product molecules and compare the results with your answer for part A

Hint: for part (a) Ho = total energy input – total energy released

Hint for part (b) ) Ho = summation of products – summation of reactants

Heats of formation here: Ho C2H6(g) = -84.7 kJ/mol, Ho CO2 = -393.5 kJ/mol, Ho H2O = -241.8 kJ/mol

1.A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.19 g of hydrated salt and have 5.87 g of anhydrous CuSO4 after heating, find the number of water molecules associated with each CuSO4 formula unit.

2.Iron(II) Sulfate forms a blue-green hydrate with the formula FeSO4 ·n H2O(s). If this hydrate is heated to a high enough temperature, H2O(g) can be driven off, leaving the dirty yellow anhydrous salt FeSO4(s). A 18.300-g sample of the hydrate was heated to 300 °C. The resulting FeSO4(s) had a mass of 9.9993 g. Calculate the value of n in FeSO4 ·n H2O(s).

3.The combustion of ethane (C2H6) produces carbon dioxide and steam:

2C2H6 (G)+7O2(G)------->4CO2 (G)+6H2O (G)

How many moles of CO2 are produced when 5.15 mol of ethane are burned in an excess of oxygen?

--------MOLS?

A. . The balanced equation for the combustion of ethanol is 2C2H5OH(g) + 7O2(g)  4CO2(g) + 6H2O(g) How many grams of dioxygen are required to burn 5.9 g of C2H5OH? B. 2Al(s) + 6HCl(aq)  2AlCl3(aq) + 3H2(g) According to the equation above, how many grams of aluminum are needed to completely react with 3.83 mol of hydrochloric acid? C. What is the formula for the chlorate of gadolinium(III)? D. What is the formula for the nitride of samarium(III)? E. An excess of sodium hydroxide is treated with 2.4 L of dry hydrogen iodide gas measured at STP.(STP means Temp =273.15K What is the mass of sodium iodide is formed?

Weekly leaderboard

Home
Homework Help 3,900,000
Chemistry 830,000
Start filling in the gaps now
Log in