What is the AH of thefollowing hypotheticalreaction? 2A(s) + B2(g) →2AB(g)Given: A(s) + B2(g) →AB2(g)2AB(g) + B2(g) –→2AB2(g)AH = -187.5 kJAH = -771.5 kJEnter your answer indecimal notation with foursignificant fiqures.

Answered: Image /qna-images/answer/e37dfb23-ed62-4732-b1f6-96c304530d43.jpg

What is the AH of the following hypothetical reaction? 2A(s) + B2(g) → 2AB(g) Given: A(s) + B2(g) → AB2(g) 2AB(g) + B2(g) → 2AB2(g) AH = -771.5 kJ ΔΗ--187.5 kJ Enter your answer in decimal notation with four significant figures.

What is the AH of the following hypothetical reaction? 2A(s) + B2(g) → 2AB(g) Given: A(s) + B2(g) → AB2(g) 2AB(g) + B2(g) → 2AB2(g) AH = -771.5 kJ ΔΗ--187.5 kJ Enter your answer in decimal notation with four significant figures.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step,…

A: To calculate the net change in enthalpy for 1 mole of nitric oxide from nitrogen , hydrogen and…

Q: 5. Given the following data calculate AH for the reaction: NO (g) + 0 (g) → NO2 (g) Data 202(g) →…

A: Heat of reaction is defined as difference of energy of product and energy of Reactant. If heat of…

Q: 50.0 mL of 1.50 M CaCl2 solution and 80.0 mL of 2.00 M NaOH solution both initially at 22.3℃ are…

A: MMoles of CaCl2 = M × V = 1.50 × 50 = 75 mmol Mmol of NaOH = M × V = 2.00 × 80 =…

Q: What is the net reaction?

A: This problem is based on Hess's law (Thermochemistry)

Q: Consider the following equations: 3A + 6B → 3D ΔΗ -404 kJ E + 2F → A AH = -114.7 kJ C → E+ 3D AH =…

A: given reaction, 3A + 6B → 3D , ΔH= -404kJ E + 2F → A , ΔH= -114.7 kJ C → E + 3D, ΔH= 68.2 KJ

Q: Pentaborane, B5H9, was once studied as a potential rocket fuel. Calculate the heat given off when 1…

A: 2B5H9 + 12O2 ------> 5B2O3 + 9H20 Enthalpy of reaction = Sum of enthalpies of products-sum of…

Q: Given the following reactions Reactions Na(s) + Cl₂(g) → Na(g) + Cl(g) 2 Na(g) + Cl(g) → Na*(g) + Cl…

A: Answer:Extensive properties are the properties that depend on the size of the system. Enthalpy…

Q: How much heat is involved when 68.0 g of N2 are reacted in the reaction: 2N2(g) + 5O2(g) + 2H2O(l) →…

A: Given, the chemical reaction,2N2(g)+5O2(g)+2H2O(l)→4HNO3(aq) ; ∆H =-256 kJamount of heat evolved…

Q: Calculate how much heat is absorbed when 100. Grams of N is mixed with 75 grams of O2. N2(g) + O2(g)…

A: First of all, calculate the no. of moles of each reactant given and then find out which one is…

Q: 5. A student combines 20.00 mL of 0.500 M HCI and 20.00 mL of 0.550 M NaOH in a calorimeter. The…

A: Recall the following expression according to Law of calorimetry…

Q: if 11.2 g of H2 (g) (MM = 2.016 g/mol) were to react according to the balanced equation given below,…

A: We have to calculate the heat released amount.

Q: Liquid hydrogen peroxide is an oxidizing agent in rocket fuel mixtures because it decomposes to form…

Q: You performed the displayed reaction in the lab and determined that 336.74 J of heat was released.…

A: The given chemical reaction that has been carried out is given by: NCl3(g) + 3H2 (g) ——> NH3 (g)…

Q: Consider the following equation for the combustion of acetone (C3H6O), the main ingredient in nail…

A: The objective of the question is to calculate the amount of heat released by the complete combustion…

Q: Ethanol, C₂H₂OH, is mixed with gasoline and sold as gasohol. Use the following to calculate the…

A: Ethanol reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: When H₂(g) reacts with O₂(g) according to the following reaction, 242 kJ of energy are evolved for…

A: Thermochemical equation- 2 H2(g) + O2(g) -----> 2 H2O(g) ∆H = 242 KJ energy evolved For each…

Q: Use the References to access important values if needed for this question. The following…

A: Iron (III) oxide reacts with hydrogen to form iron metal and water. The equation for the balanced…

Q: Consider the following equation for the combustion of acetone (C3H6O), the main ingredient in nail…

A: 1 mol of acetone releases 1790 kJ heat. We have to calculate the heat released by complete…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 198.0 mg sample…

A: Each chemical reaction is associated with the liberation or intake of a certain quantity of heat.…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.25 kg sample…

Q: When SO₂(g) reacts with O₂(g) according to the following reaction, 98.9 kJ of energy are evolved for…

A: When the heat is evolved in the reaction, then it is called as exothermic reaction. the sign of…

Q: Propane, C3H8, reacts with oxygen to produce carbon dioxide, water and heat. C3H8 + 5 O2 → 3 CO2 + 4…

A: Number of moles = Given Mass/ Molecular mass

Q: Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield nitrogen gas and…

A: Molar mass of hydrazine (N2H4) = 32.045 g/mol

Q: In the following reaction, how much heat is generated when 3.27 moles of CH« are burned? CH: (g) + 2…

A: The reaction is : CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) ∆H°=-802 kJ/mol Here, as we can…

Q: Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step,…

A: The total change in enthalpy for the solution is the sum of all changes regardless of the distinct…

Q: Calculate "q" (in kJ) for the following reaction if 11.35 grams of SO2(g) reacted with excess…

A: We have reaction of 11.35 g of SO2 with excess oxygen we have to calculate the q for this.

Q: What mass (in grams) of Si(s) must react with excess F2 to produce 2,509 kJ of heat given the…

Q: 1. Magnesium solid reacts with aqueous hydrochloric acid to form the Mg2+ ion in solution. In an…

A: 1)a) b) The heat can be calcualted using: Where m is the mass of the system C is its heat capacity…

Q: mass of carbon dioxide

Q: Use Reaction 1. Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,479.0…

Q: A 1467 kg1467 kg car is traveling down the road at 81.0 km/h.81.0 km/h. While traveling at this rate…

Q: 7. 200g of copper is placed in an oven. The hot metal is removed from the oven and quickly added to…

Q: A propane BBQ combusts propane as shown below: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H₂O (1) ArH=-2220…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.29 kg sample…

A: 0.45 or 4.49 * 10-1 J/g K

Q: 200 grams

A: A) moles of NH3 = 200g / 17gmol-1 = 11.765mol B) moles of O2 = 450g / 32gmol-1 = 14.063mol

Q: The highly exothermic thermite reaction, in which aluminum reduces iron(ll) oxide to elemental iron,…

A: Heat released and absorbed in a chemical reaction is function of the numbe of moles of reactants…

Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: If 106 kJ of heat are evolved when the reaction described below is carried out, the mass of HCI gas…

A: First we need to calculate the moles of HCl has produced in given amount of heat evolved . Using…

Q: When methanol, CH, OH, is burned in the presence of oxygen gas, O₂, a large amount of heat energy is…

A: One mole of methanol react with oxygen and produced one mole of carbon dioxide and two mole of water…

Q: The following thermochemical equation is for the reaction of carbon dioxide(g) with hydrogen(g) to…

A: Given reaction: 2CO2(g) + 5H2(g) → C2H2(g) + 4H2O(g) ∆H = 46.5 kJ We have to find the amount of…

Q: how much heat (in kJ) is released

A: Given :- CH4(g) + 2O2(g) ---> CO2(g) + 2H2O(g). ∆H°= -802 kJ/mol Number of moles of CH4 =…

Q: A 9.13-g sample of vanadium is heated to 99.10 °C and is then placed into 20.0 g water in a…

Question

What is the AH of the
following hypothetical
reaction? 2A(s) + B2(g) →
2AB(g)
Given: A(s) + B2(g) →
AB2(g)
2AB(g) + B2(g) –→
2AB2(g)
AH = -187.5 kJ
AH = -771.5 kJ
Enter your answer in
decimal notation with four
significant fiqures.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

The following thermochemical equation is for the reaction of hydrogen chloride(g) with ammonia(g) to form ammonium chloride(s). HCl(g) + NH3(g) --> NH4Cl(s) ΔH = -176kJ How many grams of HCl(g) would have to react to produce 45.2 kJ of energy? _______ grams
Question is for practice and not graded. Please elaborate on answer. Thank you.
2A + 3B → C ΔHrxn = -125 kJ Determine the amount of heat emitted when each of the following completely reacts (assume that there is more than enough of the other reactant)
How much heat (in kJ) will be released (AH) if 0.4501 mol of NH3 are mixed with 0.200 mol of O, in the following chemical reaction? 4 NH3 (g) + O2 (g) → 2 N‚H4 (g) + 2 H,O (g) AH° = -286 kJ/mol
A chemist carefully measures the amount of heat needed to raise the temperature of a 286.0 g sample of a pure substance from 6.3 °C to 23.4 °C. The experiment shows that 11.9 kJ of heat are needed. What can the chemist report for the specific heat capacity of the substance? Be sure your answer has the correct number of significant digits. - ·K
Propane reacts with oxygen gas to produce carbon dioxide and water as shown in the reaction below. How much energy in kJ will be released if 500 kg of propane is burned in the air? C3H8 + 50₂ 3CO₂ + 4H₂0 AH = -2221 kJ
The following thermochemical equation is for the reaction of carbon monoxide(g) with oxygen(g) to form carbon dioxide(g). 2CO(g) + O2(g)- →2CO2(g) AH=-566 kJ How many grams of CO(g) would have to react to produce 104 kJ of energy? grams
In the following reaction, how much heat is generated when 3.21 moles of CH4 are burned? CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O(g) AH° = -802 kJ/mol
Consider these reactions: AH = -184.6 kJ Reaction 1: H₂(g) + Cl₂ (g) → 2HCl(g) Reaction 2: 20F2 (g) → O2 (g) + 2 F₂(g) ▲H = −49.4 kJ Reaction 3: N₂(g) + 2O2(g) → 2NO₂(g) AH = +66.4 kJ Use Reaction 3. How much energy (in kJ) is absorbed when 104. L of nitrogen dioxide is created at STP? Round to the nearest whole number. Answer:
3.
In a coffee-cup calorimeter, 59.0 mL of 0.100 M AgNO3 and 59.0 mL of 0.100 M HCI are mixed to yield the following reaction. Ag (aq) + Cl(aq) → AgCl(s) The two solutions were initially at 19.10°C, and the final temperature is 19.90°C. Calculate the heat that accompanies this reaction in kJ/mol of AgCl formed. Assume that the combined solution has a mass of 118.0 g and has a specific heat capacity of 4.18 1/°C 9- 407 kJ/mol
At constant volume, the heat of combustion of a particular compound is −3733.0 kJ/mol.−3733.0 kJ/mol. When 1.361 g1.361 g of this compound (molar mass=185.51 g/mol)(molar mass=185.51 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter, including its contents, rose by 8.567 ∘C.8.567 ∘C. What is the heat capacity (calorimeter constant) of the calorimeter?