The thermite reaction, used for welding iron, is the reaction of FegO4 with Al. 8 Al (s) + 3 Fe3O4 (s) 4 Al203 (s) + 9 Fe (s) AH° = -3350 kJ

Q: When 25.0 mL of 1.0 M H₂SO is added to 50 ml of 1.0 M NaOH at 25 °C in a calorimeter, the…

A: ∆H in kJ can be calculated using formula :  ∆H = -q  Where , q is heat released or absorbed and is…

Q: The thermochemical equation for the combustion of methanol is CH₂OH (g) + 3/2 0₂(g) → CO₂(g) + 2 H₂O…

A: To find kJ of heat, convert the given mass of methanol to moles. Then, multiply the obtained moles…

Q: If the following enthalpies are known: A+ 2 B- +2C + Donding AH = - 95KJ B+X C AH = + 50kJ %3D What…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

Q: tWo steps in thể usual industrial preparation of acrylic acid, the immediate precursor of several…

A: The question is based on Hess law. it  states that net enthalpy change for the reaction remains same…

Q: Calculate the work done when an open beaker containing 50 g of iron reacts with hydrochloric acid to…

A: The solution of your question is given below -

Q: A hot air balloon is being inflated to its full extent by heating the air inside it. In the final…

A: Delta E for the process = 790 kJ

Q: Consider the following reactions: 3C(s) +4H,(g)→C;H,(g) AH° =-103.8kJ C(s) +0,(g)→ CO,(g) AH'…

A: Hess’s law- Change in enthalpy for a reaction is independent on path or steps followed by reaction.…

Q: The standard enthalpy change for the following reaction is -3.35×103 kJ at 298 K. 4 Al(s) + 3…

A: We are given the reaction - 4 Al(s) + 3 O2(g)  →   2 Al2O3(s) We proceed as follows,for finding out…

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

A: Given, Step 1: CaC2(s)+2H2O(g)→C2H2(g)+Ca(OH)2(s)       ∆H=-414 kJ   Step 2:…

Q: Use the information provided below to compute AGran () for the reaction: CO(g) C(s) +02 (9) C(s) +…

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Q: Elemental iron is used in heat packs and the reaction can be represented as: 4 Fe(s) +3 O2(g) → 2…

A: When enthalpy is negative that means reaction is exothermic reaction

Q: Part of the industrial recovery of elemental zinc from the zinc sulfide ore is by roasting: ZnSja +…

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Q: A metal bar with specific heat capacity of 0.225 J/g C requires 6440 J of energy to change its…

A: ∆T = 96-21 = 75 °C  m =?  Heat added =6440.J  Cp = 0.225 J/g°C

Q: Given the chemical reaction: CHale) +5 0,g)→3 CO,) +4 H,OG) AH = -2044 kJ How much heat would be…

A: When hydrocarbons are combusted, then the large amount of heat is produced which is known as…

Q: A piece of unknown solid substance weighs 439 g, and requires 8427 J to increase its temperature…

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Q: The following thermochemical equation is for the reaction of tetraphosphorus decaoxide(s) with…

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Q: 8.) Determine AG°rxn using the following information. (assume 298 K) H2(g) + CO(g) → CH2O(g)…

A: This question is related to Gibbs energy formula. Gibbs free energy is a quantity that is used to…

Q: Consider the reaction. 2 Fe,0, 4 Fe +302 AHixn +824.2 kJ The formation of 58.0 g of Fe results in

A: As per the balanced reaction- Generation of 4 mol Fe requires 824.2 kJ energy. So, Energy absorbed =…

Q: Use the following information to calculate the amount of heat involved in the complete reaction of…

A: this equation can be simply solved using Hess's law of constant heat summation. By summing up the…

Q: The specific heat of octane, C8H181l2, is 2.22 J>g@K. (a) Howmany J of heat are needed to raise…

A: Molar mass of octane: 114 g/molSpecific heat: 2.22 J/g-K Molar mass of water: 18 g/molSpecific heat:…

Q: Which of the following (with specific heat capacity provided) would show the smallest temperature…

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Q: Chemists have been performing experiments with the newly discovered element X to determine its…

A: The reaction given is   And ΔHo for the reaction = -191 KJ Given : Under standard conditions, X is…

Q: Charcoal is primarily carbon. Determine the mass of CO2produced by burning enough carbon to produce…

A: The given reaction is  C(s) + O2(g) ------> CO2(g)   ∆H = -393.5 kJ

Q: How much heat is absorbed in the complete reaction of 3.00 grams of SiO, with excess carbon in the…

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Q: Calculate Q(kJ )for the conversion of 2.390 g of solid aluminum oxide into aluminum and oxygen?

A: Given enthalpy change (∆H) is defined for 2 mole of AL2O3 because generally enthalpy change is…

Q: Cu(s) + 0.5 0; (g) --> CuO (s) DH - -275 kJ CuO(s) + Cu (s) --> Cu,O (s) DH = +64 kJ Calculate DH…

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Q: 4. When 1.50 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere, the…

A: Given: Mass of Ba = 1.5 gMass of H2O = 100 gSpecific heat of solution = 4.18 J/g.°CInitial…

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the…

A: Balanced equation:2 Na2O2 + 2 H2O ===> 4 NaOH + O2 Reaction type: double replacement.

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

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Q: Limestone stalactites and stalagmites are formed in caves bythe following reaction:Ca2+ (aq) + 2…

A: The chemical reaction is as follows:

Q: Calculate how much heat is released or absorbed

A: This is a dissociation reaction. In this reaction,  Molecular weight of NH3=17.031g/mol 2…

Q: 3. Calculate the AH for the reaction NO(g) + O(g) NO2(g) given the following information: NO(g) +…

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Q: Given the thermochemical expression below:   CaO (s)  +  3C (s)  ⟶  CaC2 (s)  +  CO (g)       ΔHo…

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Q: When 13.8 mL of 0.870 M lead(II) nitrate reacts with 90.0 mL of 0.777 M sodium chloride, 0.279 kJ of…

A: Answer - The correct option is - (c) 23.3 kJ

Q: When 0.0200 L of 0.800 M NaOH is mixed with 0.0400 L of 0.400 M HNO3 in a coffee-cup calorimeter,…

A: The amount of heat released in the process of neutralization is absorbed by the coffee-cup…

Q: The value of AH° for the reaction below is 128.1 kJ CH ,OH CO2es + 2H, (1) 2(g) 2(g) How may kJ of…

A: Enthalpy is thermodynamic property which is extensive in nature

Q: Given the following reactions N2 13 + O2 (g) → 2 NO 13) AHn = +178 kJ NO2 g NO g + 1/2 02 (g) AHren=…

A: From given two chemical equation we have to calculate the enthalpy change for the reaction : 4 NO…

Q: In the accompanying cylinder diagram, a chemical processoccurs at constant temperature and pressure.…

A: a. We ar esupposed to find the sign of w: We use the formula Work = -Pexternal(Vfinal - Vinitial) =…

Q: 3. The AH for N2 + O2 →2 NO is 181 kJ. What is the AH for this reaction? NO 1/2 N2 + 1/2 O2

A: Given information: N2+O2→2NO           ∆H=181 kJ               equation-1

Q: One origin of SO3 is the combustion of sulfur, which is present in small quantities in coal. S (5) +…

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Q: How much heat is released at constant pressure if 12.3 mL of 0.161 M silver nitrate is mixed with…

A: Given,  AgNO3(aq) + KCl(aq)  ➝ AgCl(s) + KNO3(aq) ∆H° = -65.5 kJ Here (-) sign indicate the release…

Q: The standard molar enthalpy formation of ammonia, NH3(g) is -45.92 kJ. 1/2 N2(g) + 3/2 H2(g) ==>…

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Q: The standard enthalpy change for the following reaction is -1.10×103 kJ at 298 K. Mg(s) +…

A: To solve this problem we have to consider the enthalpy change of given reaction . Since we know that…

Q: Iron can be extracted from the iron(III) oxide found in iron ores (such as haematite) via an…

A: Since you have posted multiple questions, we can solve only first question. To get the second…

Q: A 27.7 g sample of ethylene glycol, car radiator coolant,loses 688 J of heat. What is the initial…

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Q: The specific heat capacity of copper is 0.384 J/g⋅°C. What is the molar specific heat capacity of…

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Q: The standard enthalpy changes of formation of iron(II) oxide, FeO(s), and aluminum oxide, Al203(s)…

A: The balanced reaction taking place is given as, Given : ΔHof [FeO(s) ] = -266 KJ/mol And ΔHof…

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

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Q: When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0g of water in a coffee-cup…

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Q: Calculate ΔH°rxn

A: