In walking 1 km, you use about 100 kJ of energy. Thisenergy comes from the oxidation of foods, which is about30% efficient. How much energy do you save by walking1 km instead of driving a car that gets 8.0 km L-1gasoline (19 miles/gal)? The density of gasoline is 0.68 g cm-3and its enthalpy of combustion is-48 kJ g-1.

Q: (a) In an experiment, a gas contracts from 0.674 L to 0.243 L under a constant external pressure of…

A: Given - (a) Initial volume of gas = 0.674L      Final volume of gas = 0.243L      Pressure = 2.138…

Q: A 0.530-g sample of nonanedioic acid (C9H1604) is burned in a bomb calorimeter and the temperature…

A: To calculate the change in enthalpy (ΔH) for the combustion reaction per mole of nonanedioic acid (C…

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6 HCI(aq) → 2 MCI, (aq) + 3…

A: Hess's law states the enthalpy change for the overall reaction is the sum of the enthalpies of…

Q: Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon…

A:

Q: You mix 280 ml of 0.157 M LIOH with 280 ml of 0.347 M HF in a coffee-cup calorimeter, and the T of…

A: LiOH               +          HF         →              H2O            +            LiF 0.157 M…

Q: . (a) We place 77.7 g of a metal at 10.00 ◦C in 333.3 g of water at 70.00 ◦C. The water is in a…

A: Dear student, we are authorised to solve only one question at a time. Please post rest of the…

Q: 5(b)

A: The heat in a calorimeter, qcal is given as :

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HC1(g) AH = -184.6 kJ Reaction 2: 20F2 (g)…

A: -> If ∆H =+ve => reaction is endothermic reaction. -> if ∆H = -ve => reaction is…

Q: Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product…

A:

Q: What is the enthalpy change for producing 1.00 kg of acetic acid by this reaction?

A:

Q: Based on this value and the standard enthalpies of formation for the other substances, the standard…

A: Standard enthalpy of formation is the change in enthalpy that accompanies the formation of one mole…

Q: A chemist measures the enthalpy change AH during the following reaction: 8 SO2(g) + 16 H,S(g)→3S8(s)…

A:

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

A:

Q: Using the partial equations below, determine the enthalpy of formation of nitric oxide (NO). Hint:…

A:

Q: 8 SO,(9) + 16 H,S(9)→3 Sg(s) + 16 H,0(1) AH=-1863. kJ Use this information to complete the table…

A: given reaction, the enthalpy change is 8 SO2 (g) + 16H2S(g) → 3S8(s) + 16H2O(l), ΔH = -1863. KJ    -…

Q: How much did our sodium-in-water demonstration raise the temperature of water in the dessicator jar?…

A: The objective of the question is to find out how much the sodium-in-water demonstration raised the…

Q: You mix 208 ml of 0.291 M LIOH with 208 ml of 0.536 M HF in a coffee-cup calorimeter, and the T of…

A: Calorimeters are used for the determination of heat of reaction. For a coffee-cup calorimeter the…

Q: Calculate the standard enthalpy change for the reaction where the heats of formation are given in…

A: Given: 2A+B↔2C+2D Substance ∆Hfo(kJ/mol) A -265 B -421 C 225 D -483

Q: The enthalpy change in the hydrogen combustion reaction is H2(g) + O2(g) H2O(1) AH-241.8 kJ/mol.…

A:

Q: When methanol, CH,OH, is burned in the presence oxygen gas, 0, a large amount of heat energy is…

A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…

Q: Consider the following reaction: 2C6H6() + 15 O2(g)- 12 CO2(g) + 6 H20() AH = -5.869 x 103 kJ An…

A: Each reaction takes place account to their stoichiometric radio and account to those things the heat…

Q: Determine the enthalpy change, AHrxm, for the following reaction using the information below.…

A:

Q: dissolution of one mole of NaOH in water releases 44.4 kJ of heat: H(s)→ Na*(aq) + OH*(aq) ΔΗ =…

A: Given: Heat of dissolution of 1 mole of NaOH in water releases 44.4 kJ.Given: Mass of sample of NaOH…

Q: 8. Consider the reaction: C,H1,O(s) + 60;(g) → 6CO:(g) + 6H;0(1) , the heat change q for this…

A: When the energy of the products is smaller than the reactants or the system releases heat in the…

Q: Consider the following two reactions and write down the balanced chemical equations. Reaction 1:…

A: Given,

Q: 12. Consider the following process. + 2H,O(e) AH = -802 kJ %3D CH4 (8) + 202 (8) 2 CO2 (8) A) Is the…

A: We have to predict the change in enthalpy and it's nature.

Q: 4. Methane burns in air to form carbon dioxide and water according to the following equation: CH +…

A: 1) When ΔH < 0, the reaction is Exothermic. When ΔH > 0, the reaction is Endothermic. 2)In…

Q: Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product…

A: Standard enthalpy change is calculated by looking at change in enthalpy of product and reactant

Q: The standard enthalpy changes for the formation of aluminum oxide and iron (III) oxide are 2 Al(s) +…

A:

Q: w (horsqlisa boling) vibos paimundo vilanden pol 7. For which of the following reaction(s) is the…

A:

Q: For which of the following reactions is AH equal to AH of the product(s)?You do not need to look up…

A: The reactions given are,

Q: 1. Calculate the enthalpy of reaction for the combustion of methane gas, CH4, to form CO,(g) +…

A: In this question, we want to Calculate tye Enthalpy of the combustion Reaction for methane. You can…

Q: If a system has 225 kcal of work done to it, and releases 5.00 x 102 kJ of heat into its…

A: Given,  A system has 225 KCal of work done to it and it releases 5.00×102 KJ of heat the internal…

Q: In a calorimetry experiment 5.6 g of potassium hydroxide is dissolved in 400 mL water in a thermos…

A: In the given question we have to calculate the enthalpy change of the following,  first of all, we…