We allow 81 g of oxygen to react with 66 g of ethane.  The reaction is shown below.  Since the heat of combustion of ethane is -1560 kJ/mol, how much heat is exchanged by the system if the reaction is the system?  C2H6 (g) + 72 O2 (g) → 2 CO2 (g) + 3 H2O (g)

Q: 170 mL of 0.25 M HNO3 are mixed with 125 mL of 0.30 M KOH in a calorimeter. If the solutions have an…

A: Volume of HNO3 = 170 mL Molarity of HNO3 = 0.25 M Volume of KOH = 125 mL Molarity of KOH = 0.30 M…

Q: The thermochemical equation for the combustion of methanol is CH3OH (g)  +  3/2 O2(g)  →  CO2(g)  +…

A: Here we are required to find the heat produced on burning 5 gm of methanol

Q: 8. The overall reaction in commercial heat packs can be represented as   How much heat is released…

A:

Q: Question 17 of 22 Submit In the following reaction, how much heat (in kJ) is released when 3.21…

A: Given combustion reaction: CH4 (g) + 2O2 (g)  ------> CO2 (g)  + 2H2O(g)  enthalpy change of the…

Q: e the information to answer the following questions. This reaction is... Suppose 41.0 g of NH3…

A: The given data: 2NH3(g) ==> N2(g) + 3H2(g)∆H° = 160 KJ When ∆H° is positive,  it means heat is…

Q: How much heat will be released (AH) if 0.4501 mol of NH3 are mixed with 0.20 mol of O2 in the…

A:

Q: How much heat is produced when 25.4 g of NO2 react?    4NO2(g) + O2(g) →  2N2O5(g)      heat of…

A: Given  Mass of NO2= 25.4 g To find heat is produced.

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1) + O₂(g)…

A: In an exothermic reaction, heat is released, and in an endothermic reaction, heat is absorbed.

Q: 2 C4H10(g) + 13 O2(g) --> 8 CO2(g) + 10 H2O(l) change in H = -5756.84 kJ The enthalpy change during…

A: The objective of the question is to find out the mass of CO2 produced in a reaction with a given…

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: 1). A reaction was performed in a coffee cup calorimeter with an assumed calorimeter constant of…

A: Since you have posted multiple questions, we'll answer the first one. If yo want any other questions…

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1) + O₂(g)…

A: The objective of the question is to determine the type of reaction (endothermic or exothermic) and…

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: How much heat is evolved when 453.5 g of ammonia (NH3) is produced according to the following…

A: Given Reaction is - N2 (g) + 3H2 (g) → 2NH3 (g)                  ΔH= -91.8 kJ

Q: A chemist measures the energy change AH during the following reaction: 2 NO₂(g) → N₂O4(9) Use the…

A: Answer:During a chemical reaction, when heat gets evolved then it is called as exothermic reaction…

Q: 4. When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose…

A: Given : Volume of water = 35 L                                = 35 × 10³ mL initial temperature of…

Q: When carbon disulfide,CS2, forms from its elements, heat is absorbed. How much heat would be…

A: Enthalpy of formation of carbon disulphide = 89.3 kJ The formation of carbon disulphide is for 1…

Q: The principal component of LPG is butane, C4H10(g). If combustion of 1 mole of butane produces 126…

A:

Q: The combustion of CH4 releases 890.4 kJ/mol of heat according to the equation: CH4(g) + 2 O2(g) -->…

A:

Q: For the following combustion reaction CH3CH₂CH₂COOH(1) +502(g) → 4CO₂(g) + 4H₂O(g) AH = -2.18 × 10³…

A:

Q: We allow 73 g of oxygen to react with 85 g of ethane.  The reaction is shown below.  Since the heat…

A: Given - Balanced thermodynamical Reaction -  C2H6 (g) + 7/2 O2 (g) → 2 CO2 (g) + 3 H2O (g) ,…

Q: Which of the following represents an exothermic chemical reaction? O CO2 (g) breaking into C (s,…

A: Exothermic reaction are those in which heat is released. For exothermic reaction ∆H is negative.

Q: Here is the reaction equation for the combustion of butane, which is an exothermic reaction. 2…

A: Exothermic  reaction that releases energy from the system to its surroundings

Q: They are all one question. When a solid dissolves in water, heat may be evolved or absorbed. The…

A: Given, When 5.21 g of CsClO4(s) are dissolved in 114.80 g of water, the temperature of the solution…

Q: What is the q (heat) for 140.2 g of PCl3 decomposing to form chlorine gas and elemental phosphorus?…

A: Decomposition reaction of PCl3 is ,∆H°rxn =1207 kJMass of PCl3 = 140.2 g Molar mass of PCl3 = 137.32…

Q: In the following reaction, what is the quantity of heat (in kJ) released when 1.81 moles of CH4 are…

A:

Q: A chemist measures the energy change AH during the following reaction: C3Hg(g)+50₂(g) → 3 CO₂(g) +…

A: mass of C3H8 =  95.4 g

Q: A 4.77 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given information: Mass of unknown sample = 4.77 g Mass of water = 150.00 g Initial temperature =…

Q: A chemist measures the energy change AH during the following reaction: 2 H₂O(l) → 2 H₂(g) + O₂(g)…

A: In this question we have identify the given reaction is endothermic or exothermic and calculate the…

Q: The standard enthalpies of formation, at 25.00°C, of methane (CH4(g)), water (H2O(l)), and carbon…

A: The combustion reaction of methane (CH4) with oxygen (O2) to produce water (H2O) and carbon dioxide…

Q: Liquid hydrogen peroxide is an oxidizing agent in many rocket fuel mixtures because it releases…

A:

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: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N₂(g) + 3H₂(g) ΔΗ=…

A:

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: A chemist measures the energy change AH during the following reaction: C3H₂(g) +50₂(g) → 3 CO₂(g) +…

A: Exothermic reaction and endothermic reaction:Exothermic reaction : Exothermic reactions are reaction…

Q: A 5.71 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Mass of unknown salt = 5.71 gMolar mass of unknown salt = 116.82 g/molAmount of water = 150.00…

Q: mass of carbon dioxide

A:

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

A:

Q: Consider the reaction of hydrogen with sulfur to form hydrogen sulfide: 8H₂ (g) + S8 (s) → 8H₂S(g),…

A: The difference in the enthalpy of the products and reactants is known as the enthalpy change of the…

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

A:

Q: A 8.17 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Weight of a compound divided by its molecular mass (MM) gives the moles of the compound.

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: None

A:

Q: For the highly exothermic reaction H2(g) + 1/2 O2(g) → H2O(g) qrx =DHrx = -242 kJ, What quantity of…

A: Given: no of moles of H2 =17.9molno of moles of O2 = 1.13 molThe reaction is:H2(g) + 1/2 O2(g) →…