Compute the standard heat of reaction

Assignment Help Chemistry
Reference no: EM13149164

Consider the exothermic reaction 4NH3(g) + 5O2(g) -----> 4NO(g) + 6H2O(g) Calculate the standard heat of reaction, or , for this reaction using the given data. Also consider that the standard enthalpy of the formation of elements in their pure form is considered to be zero. Reactant or product NH3g) -45.9 kJ/mol NO(g) 91.3 kJ/mol H2O (g) -241.8 kJ/mol Express your answer to four significant figures and include the appropriate units.

Reference no: EM13149164

Questions Cloud

Find probability that one of tires will last more than miles : The lifetime of automobile tires of a certain brand are found to follow an exponential distribution with mean 30 (in thousands of miles). Find the probability that one of these tires will last
A central bank that adopts a fixed exchange : A central bank that adopts a fixed exchange rate system may sacrifice its monetary autonomy in setting its domestic monetary policy.
Evidence to conclude that difference cats and dogs sleep : Is there sufficient evidence to conclude that a difference exists between the proportions of cats and dogs that sleep more than 10 hours per day?
How much will the profit or loss be : If the product price is $105, at its optimal output will the firm realize an economic profit, break even, or incur an economic loss? How much will the profit or loss be? Show all calculations.
Compute the standard heat of reaction : Calculate the standard heat of reaction, or , for this reaction using the given data. Also consider that the standard enthalpy of the formation of elements in their pure form is considered to be zero.
Warranty expenses during the year : In the current year, Hanna Company reported warranty expense of $196,000 and the warranty liability account increase $13,000. What were warranty expenditures during the year?
What new decisions will you make regarding production levels : Now, suppose that following the supply and demand changes in (a), a substitute good goes up in price, and your costs of production increase. What new decisions will you make regarding production levels and pricing for your Widget facility?
How many grams of solvent are present in given soln : Tincture of iodine is I2(s) dissolved in ethanol, C2H2OH. A 1% solution of tincture of iodine is 10.0g of solute for 1000g of solution.
Price-taking firm was earning zero economic profits : If the price-taking firm was earning zero economic profits before the dynamic efficiency, will the level of profits change after? If so, show the extent of the change.

Reviews

Write a Review

Chemistry Questions & Answers

  How many grams of kno3 were present in the original sample

A 49 gram sample of impure potassium nitrate (KNO3) was heated to complete decomposition according to the equation 2 KNO3(s) → 2 KNO2(s) + O2(g) After the reaction was complete.

  The simplest and molecular formulas for caffeine are?

Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28.9% N. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3.03C. Pure benzene (kf=5.10 degrees C/m) freezes at 5.50C.

  What concentrations are needed

Using phosphoric acid, what concentrations are needed to give a pH 8.10 solution with an ionic strength of 0.100 M?

  How many moles of hcl must be added

If you have 400mL of .5 M NH3, how many moles of .47 M HCl must be added to the ammonia solution to reach the equivalence point.

  How much oxygen was used

An oxygen tank kept at 20.0?C contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 20.7 atm. How much oxygen was used during the two-week period?

  Explain hcl is a significant component of gastric juice

HCL is a significant component of gastric juice. what is the concentration of chloride ion in gastric juice at pH=1.27?

  How many square meters will the oil slick cover

A fishing boat accidentally spills 9 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 10^2 nm thick, how many square meters will the oil slick cover?

  Draw and name the molecule which contains only carbon

Draw and name the molecule which contains only carbon and hydrgen atoms only three of which are carbon

  Explain empirical and molecular formula of adrenaline

Empirical and Molecular Formula of Adrenaline, Adrenaline contains 59% C, 7.1% H, 26.2% O and 7.7% N and has a molar mass of about 180 g/mol.

  What is the theoretical yield of aspirin

What is the theoretical yield of aspirin if 175 kg of salicylic acid is allowed to react with 118 kg of acetic anhydride?

  How many moles of silver can be produced

Given the unbalanced equation: Ag2CO3 ® Ag + O2 + CO2, how many moles of Ag can be produced from 2.5 moles of Ag2CO3.

  What is the molecular formula of this compound

An unknown compound has the empirical formula CH2. A 0.050-mol sample of this compound weighs 4.20 g. What is the molecular formula of this compound?

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