What is the enthalpy change

Assignment Help Chemistry
Reference no: EM13129172

What is the enthalpy change when a 4.0 gram sample of aluminum burns in excess of oxygen to form aluminum oxide?
4 Al(s) + 3 O2(g) " 2 Al2O3(s) "H = 3351 kJ"

Reference no: EM13129172

Questions Cloud

Chances less than three children catch measles in minnesota : In recent years, 3.4 children per year get sick with measles in Minnesota. If a recent year is taken at random, what is the probability that:
Current manufacturing costs : If ending WIP is $18,000 and ending finished goods is $15,000, how much were the cost of goods manufactured and the current manufacturing costs?
What is the ksp of barium carbonate : The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6 . What is the Ksp of barium carbonate?
Calculate the unit costs for materials and conversion costs : Calculate the unit costs for materials and conversion costs. Determine the costs to be assigned to the units transferred out and ending work in process.
What is the enthalpy change : What is the enthalpy change when a 4.0 gram sample of aluminum burns in excess of oxygen to form aluminum oxide?
Probability that average of scores of two students greater : What is the probability that the average of the scores of the two students from university A will be greater than average of the scores of the three students from University B?
Stock-based compensation package : As part of its stock-based compensation package, International Electronics granted 24 million stock appreciation rights (SARs) to top officers on January 1, 2006.
Explain how would this amount be reported in the company : Without regard to your answer in (2) above, assume manufacturing overhead was underapplied in December. Explain how would this amount be reported in the company's financial statements at December 31?
The story of an hour : Consider the major aspects (action/plot, character, setting, & language/voice) of "Clever Manka" and "The Story of an Hour." Describe one (1) of these aspects (by comparing/contrasting the aspect/element) in each story.

Reviews

Write a Review

Chemistry Questions & Answers

  How many moles of acetylene would be used

If 4.00 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced.

  Explain ph of solution during titration process

PH of solution during titration process, Q1: What is the pH of a 0.35 M solution of a weak acid HA with Ka = 1.41×10^-8?

  How many grams of nh3 are produced

Mg3N2 + 6H2O ----> 3Mg(OH)2 + 2NH3 When 36.0g of H2O react, how many grams of NH3 are produced?

  What volume of sodium hydroxide solution is required

What volume (in mL) of a 1.420M NaOH solution is required to titrate 25.0mL of 4.50M HCl solution.

  Determine the final concentration

1.60 M solution(78.0 mL ) is diluted to a volume of 278 mL and a 139-mL portion of that solution is diluted using 175 mL of  H 2 O ,water determine the final concentration?

  Determine how much electricity turbine generate per year

Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 75 meters and a wind-conversion efficiency of 25 percent.

  Compute the amount of heat essential

Compute the amount of heat essential to fully sublime ninety grams of solid dry ice (CO 2 ) at its temperature of sublimation if it is given that the heat of sublimation for CO 2 = 32.3 kj/mol express your answers in kilojoules?

  Determine the pressure of substance

Determine the molarity of the solution If 3.00 grams of Ammonium sulfate is dissolved in enough H2O to form 300. mL of solution,?

  Calculate amount of 10.00% acetic acid you will need to add

Calculate the amount of 10.00% acetic acid you will need to add to 100.0 mL of your milk in order to bring the final acidity to 1.00% acetic acid.

  What is the new volume of the gas

The number of moles in 15.39 g of C2H6O (molar mass =46.1 g/mol) is ,You transfer a sample of gas at 17 degrees C from a volume of 4.71 L and 1.10 atm to a container at 37 degrees C.

  What is the linear attenuation coefficient for the material

A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. a) what is the linear attenuation coefficient for this material? b) What is the half thickness? c) what is the mean-free-path length for 1.25-MeV photons in this mate..

  Calculate the partial pressure of the gases

A mixture of gases contains 0.290 mol CH4, 0.250 mol C2H6, and 0.270 mol C3H8. The total pressure is 1.60 atm. Calculate the partial pressure of the gases.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd