What is the mass percent of iron in iron(II) phosphide? SHOW WORK.

Q: Find ΔS° for the formation of CH3OH(l) from its elements.

A: The measure of disorder and randomness of the system is defined as Entropy. All the molecular motion…

Q: How does energy reduction contribute to the development of green chemistry? NOTE: This question is…

A: Green chemistry is the utilisation of a set of principles that reduces or eliminates the use Or…

Q: What is the largest amount of work other than the pV type that can be performed by the reaction…

A: The maximum work done is calculated below.

Q: How much energy will be needed or produced if 5.75 g of magnesium is used in the reaction: 2Mg) + O2…

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Q: d. +213.4 kJ

A: Enthalpy of formation of a compound is the change of enthalpy during the formation of products from…

Q: How much heat (in kJ) is absorbed in the process of making 0.877 mol of CF, from the following…

A: The given chemical reaction is as follows,C(s)+2F2(g)→CF4(g)       ∆H° =141.3 kJmolnumber of moles…

Q: Which of the following is a state function? O Pressure O Volume O Temperature All the above

A: State functions having property which depends on the initial and final state of the system, does not…

Q: b) If that heat came from cooling a 1.361 kg lump of iron, what was the initial temperature of the…

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Q: . For the reaction N +0. → 2NO 2(g) 2(g) needed to generate 40 moles of NO? 0 ‚ÄHº : = 180.5 kJ, how…

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Q: When limestone (solid CaCO,) is heated, it decomposes into lime (solid CaO) and carbon dioxide gas.…

A: Mass of CaCO3 = 13.1 kg      since 1 kg = 1000 gMass of CaCO3 = 13.1 kg ×1000 g1 kgMass of CaCO3 =…

Q: If the reaction was carried out at 650 °C, what volume would the original amount of chlorine have…

A: Given The balanced chemical reaction is as follows:…

Q: Calculate the heat evolved when 266g of white phosphorus (P.) burns in air according to the…

A: We know that:  Buring reaction of P4 in air:  P4(s) + 5O2(g) ....> P4O10(s)  And this reaction…

Q: The enthalpy of reaction is −2202.0 kJ/mol. How much energy (in joules) will be released if 61.95…

A: Energy released = number of moles × molar enthalpy of combustion

Q: Would you agree to buy 1.23 x 1021 platinum atoms for $21? Explain why or why not, showing all work.…

A: 1 mole = 6.022×1023 [ Avogadro's number ] The mass of 1 mole of atoms of an element is called its…

Q: If 124 kJ of heat is absorbed in a reaction that forms nitric oxide from nitrogen and oxygen, what…

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Q: What is the mass % of work in Calcium hyboworkite. A/

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Q: R = 0.08206 L.atm/K.m o l  What volume of ammonia gas, measured at 687 mmHg and 29.6oC, is required…

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Q: The sun supplies energy at a rate of about 1.0 kilowatt per square meter of surface area (1 watt = 1…

A:

Q: For the combustion of pentane: 6 H20 (g) 5 CO2 (8) СЭН12 () + 802 (9) > a) Calculate the AHrxn for…

A: ∆H can be found by the reaction,∆H(products) - ∆H(reactants)

Q: 45. How much heat is produced by burning 4.00 moles of acetylene under standard state conditions?

A: Combustion is an exothermic reaction.  The balanced chemical equation for the combustion of…

Q: What is the heat of formation of chromium (III) oxide

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Q: Show all calculations and steps: 10. Determine the amount (in moles) of 2.35 kg of hydrogen…

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Q: 35 dm3 of hydrogen is produced at a total pressure of 1 atm by the action of acid on metal.…

A: In defining work, we focus on the effects that the system  has on its surroundings. Thus we define…

Q: 47. How many moles of isooctane must be burned to produce 100 kJ of heat under standard state…

A: Molecular formula for iso octane is (C8H18) and it's an important constituent of gasoline (petrol).…

Q: Enter your answer in the provided box. Calculate AG for the following reaction at 25°C: 3Mn²+ (aq) +…

A: Given that, at 25°C a reaction is 3Mn2+(aq) + 2Al(s) ⇌ 3Mn(s) + 2Al3+(aq). We have to calculate the…

Q: 4. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas: Mg + HCI-H₂ + MgCl₂ If…

A: Given-> Weight of Mg = 2.30 gm At SATP -> Temperature (T) = 25°C = 298 K Pressure (P) = 100…

Q: What is pressure-volume work? How is it calculated?

A: Pressure-volume work is the work which is done by or done on the fluid or gaseous system during…

Q: How much work (in J) is involved in a chemical reaction ifthe volume decreases from 5.00 to 1.26 L…

A: We have the formula for work as W = -P deltaV We are given the change in volume as 5 mL to 1.26 mL…

Q: Aluminum chloride, a white powder, is an important chemical produced industrially by heating a…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Consider the following reaction: 2Mg(s)+O2(g)⟶2MgO(s)                   ΔH∘=−1203 kJ What mass (in…

A: From stoichiometric equation, we will calculate the number of moles of magnesium that must be…

Q: What mass of O2 in grams can be produced when 250.0 kJ of heat was supplied? (MM O2 = 32.00 g/mol)…

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Q: The following reaction occurs under which condition(s)? either heat or light O b. heat O c. light

A: This reaction is proceed by light.

Q: What mass of galena (PbS) is converted to lead (II) oxide if 200 kJ of heat are produced?

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Q: ifies the change in internal energy when a molecule is added to a system at constant volume and…

A: Gibb's free energy for closed system can be capable for P-V system work and it uses Helmholtz…

Q: Calculate the standard enthalpy change for the reaction at 25 °C. Standard enthalpy of formation…

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Q: What is the maximum work that could be obtained from 5.33 g of zinc metal in the following

A: We need to find Change in Gibbs free energy (∆G° )  Since ∆G° = Maximum work done.   ∆G° = G°p - G°R…

Q: Potassium aluminum sulfate has the formula KAl(SO₄)₂·12H₂O. If 0.5000 moles of alum are heated until…

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Q: Show all calculations and steps: 9. Determine the amount (in moles) of 53.45 g of lithium…

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Q: If 226 kJ of heat increases the temperature of 47kg of copper by 12.5 °C, what is the molar heat…

A: The molar heat capacity of a substance is the amount of heat needed to increase the temperature by…

Q: Calculate the standard enthalpy change for the following reaction conducted at 25°C: 2MGO(s)→ 2Mg(s)…

A:

Q: How much heat is produced when 1.25 g of chromium metal reacts with oxygen gas under standard…

A: Given that in there is 1.25 g of chromium (Cr) metal which will react with O2

Q: Choose the formation reaction that represents for liquid methanol (CH3OH):       a.  CH3OH(l)   →…

A:

Q: Chloroform is an organic solvent found in many chemistry laboratories, and it is fairly volatile.…

A: Formula used : pressure = density * RT/molar mass

Q: Find ΔS° for the formation of CH₃OH(l) from its elements

A: The formation of CH3OH (I) in its element is

Q: standard enthalpy change for this reaction.

A:

Q: For this reaction: C4H10 ( l ) +13/2 O2 ( g ) ⟶ 4CO2( g ) + 5H2O ( g ) Δ H r x n = − 2658 kJ /mol…

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

Q: Calculate the enthalpy of decomposing hydrogen iodide to produce hydrogen and iodine.…

A: (1)  2HI(g) →  I2(s) + H2(g)           ;              ΔH⁰ = y kJ (2)  I2(s) → I2(g)…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.