2) A cold pack consists of an inner pouch containing ammonium nitrate, NH4 NO3 (s), and an outer pouch of water. Twisting the pack breaks the inner pouch and allows the water and ammonium nitrate to mix. As the ammonium nitrate dissolves, the temperature of the surroundings decreases. The energy change per mole of ammonium nitrate disso- ciated is 25.7 kJ. a) Classify the reaction as endothermic or exothermic. b) Draw a potential energy diagram for the reaction. Label the change in enthalpy. c) Write a thermochemical equation for this reaction.

Q: A chemist measures the energy change AH during the following reaction: C,H3(g)+50,(g) → 3…

A: The given reaction is : C3H8(g)  +  5O2(g)  →  3CO2(g)  +  4H2O(l)            ∆H=-2220 kJ

Q: A chemist measures the energy change AH during the following reaction: C,Hg(9)+50,(9) → 3…

A:

Q: Sucrose, C12H2011 is oxidized in the body by O2 via a complex set of reactions that ultimately…

A: Given Energy released per mole of sucrose = -5.64 × 103 kJ/mol

Q: , how many grams of aluminum can form when 1000 kJ of heat is transferred?

A: Given:  ΔH = 1676 kJ/mol To find what does 1000 kJ of heat will be produced

Q: A chemist measures the energy change AH during the following reaction: C;Hg(9)+5O,(g) →3…

A: We have to find whether this reaction is exothermic or endothermic. Also, we have to find the amount…

Q: When 0.963 g of benzene, C6H6, is burned in a bomb calorimeter, the temperature of the calorimeter…

A: The amount of heat was produced by the combustion of the glucose sample is calculated as,

Q: Silane, SiH4, burns according to the reaction, SiH4 + 2O2 → SiO2 + 2H2O, with ΔH° = –1429 kJ. How…

A: In the question, negative sign of ∆H° means energy is released during the burning of SiH4  You can…

Q: Calculate the amount of heat released

A: Number of moles = mass/molar mass  Molar mass of MgO is 40.3044 g/mol

Q: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

A: The balanced reaction taking place is given as, 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s)…

Q: Which expression describes the heat evolved in a chemical reaction when the reaction is carried out…

A:

Q: chemical industry. Seashells or chalk (limestone) are roasted in kilns to produce CaO (quicklime).…

A: Generally decomposition reactions are endothermic as heat is required to break the bonds while…

Q: How many grams of octane CgH18 must be burned to produce 3.25 X 10" kJ of heat? 2 C3H18 + 13 O2- 16…

A: In this problem, we have to calculate the mass of octane burnt during combustion to provide 3.25×104…

Q: The thermite reaction, Fe2O31s2 + 2 Al1s2 ¡ 2 Fe1s2 + Al2O31s2, ∆H° = -851.5 kJ>mol, is one of…

A: Given data: In the given  thermite reaction heat is released per mole of Al2O3 need to calculate.…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,O3(s) 4 FeO(s)+O,(g)…

A:

Q: 1) Consider this reaction: Pb + PbO2 + 2SO3 → 2PBSO4 AH°rxn = -775 kJ How much heat will be released…

A:

Q: The value of AH° for the reaction below is -82 kJ. kJ of heat are released when 80.9 grams of HBr is…

A: The balanced reaction given is, Given: ΔH of reaction = -82 KJ. And mass of HBr formed = 80.9 g.

Q: The enthalpy of neutralization for the reaction of a strong acid with a strong base is -56 kJ/mol.…

A:

Q: Consider the following reaction:2 CH3OH1g2¡ 2 CH41g2 + O21g2 ΔH = +252.8 kJ(a) Is this reaction…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N,(9)+3H,(g)…

A:

Q: 6. The reaction for the combustion of octane, CeH18, is shown below. 2 CH18(g) + 25 0:(g)16 CO:(g) +…

A:

Q: During an endothermic reaction, H for the reactants was −600 kJ/mol. Which of the following…

A: Note - Since you have asked multiple question, we will solve the first question for you. If you…

Q: What is being avoided in cleaning the laboratory tools and equipment before using? A. contamination…

A: 4 . Answer  D. Viruses  5. Answer  B. pinchcock  At the bottom of the tube is a stopcock, or valve,…

Q: A chemist measures the energy change AH during the following reaction 2 Fe,O3(s) → 4 FeO(s)+O,(g)…

A:

Q: 5. Calculate and draw the enthalpy diagram for the following reaction: Mg(s) + H20(g) → Mg0(s) + H2…

A: 5. In these types of questions we have to provide stepwise enthalpy diagram and accordingly…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,03(s) → 4 FeO(s)+O2(g)…

A: Enthalpy change of a reaction, ∆H = ∑∆H (products) - ∑∆H (reactants)

Q: A 0.5865‐g of lactic acid, CH3H5O3 , is burned in a bomb calorimeter,  whose heat capacity is 4.812…

A: ∆H is the form of energy or enthalpy which is define in kj/mol. Combustion energy is always…

Q: Consider the following reaction between nitrogen and hydrogen gases.   N2(g) + 2H2(g) → N2H4(g) ΔH…

A:

Q: You are given the following equation for the formation of sulfur trioxide in the reaction below.…

A: Mass of vegetable oil = 1.15 kg = 1150 gm  Heat capacity of vegetable oil (c) = 1.67 J/g°C  Initial…

Q: 11) When potassium chloride reacts with oxygen under the right conditions, potassium chlorate is…

A: Since you are posted with multiple questions. As per the rule I am answering first question only.…

Q: Hydrogen peroxide can decompose to water and oxygen by the reaction: 2H2O2(l) →2H2O(l) + O2(g) ∆H =…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Ammonium Nitrate, NH,NO3, powder is used as the ice pack for sports injury. When water in the sack…

A: Given,  Ammonium Nitrate powder is used as the ice pack for sports injury. When water in the sack is…

Q: 1. A 5.000 g sample of methanol, CH,OH, was combusted in the presence of excess oxygen in a bomb…

A: given information from question are- mass of methanol = 5g. mass of water = 4000 g. temperature…

Q: How many kilojoules of heat

A: D)

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

A:

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,O3(s) → 4 FeO(s)+O,(g)…

A: The balanced reaction taking place is given as,

Q: A 6.55 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

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: A chemist measures the energy change AH during the following reaction: 2 Fe,O3(s) → 4 FeO(s)+O2(g)…

A: Exothermic reaction: If the energy is released in the reaction. Endothermic reaction: If the energy…

Q: Hydrogen is a very useful gas and can be used to produce energy for vehicle fuel via combustion…

A: The following characteristics of hydrogen has no contribution in making the hydrogen favorable as a…

Q: Question attached

A: Enthalpy of the reaction is the amount of heat released when 1 mole of the substance is reacted.

Q: Hydrogen peroxide can decompose to water and oxygen by the reaction: 2 H2O2(l) →2 H2O(l) + O2(g) ∆H…

A: GIVEN: Reaction: 2 H2O2(l) →2 H2O(l) + O2(g) Amount of heat released by the decomposition of H2O2 ∆H…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,03(s) → 4 Fe0(s)+O,(g)…

A: Given:

Q: hydrogen peroxide can decompose to water and oxygen by the reaction: 2H2O2(l) →2H2O(l) + O2(g) ∆H =…

A: Moles of H2O2 =mass of H2O2 molar mass of H2O2 =  534 mol   By stoichiometry of reaction : 2 moles…

Q: The combustion of methane is described by the following balanced chemical equation. CH4(g) + 2O2(g)…

A: Given : Enthalpy change of reaction ∆ H = - 34.5 kj We need to find if reaction is exothermic Or…

Q: What quantity of heat (in kJ) will be released if 1.20 mol of SrO is mixed with 0.567 mol of CO, in…

A:

Q: Consider the following reaction:2 CH3OH(g)---->2 CH4(g) + O2(g) ΔH = +252.8 kJ(a) Is this…

A: (a) The given reaction is, The enthalpy change of the given reaction is +252.8 kJ. If the enthalpy…

Q: When a reaction that was known to release 17.55 kJ of heat took place in a calorimeter and…

A:

Q: How much heat (in kilojoules) is evolved when 135 g of aluminum reacts completely in the following…

A: Applying mole concept and unitary method for calculation.

Q: 9. Consider the reaction NH4NO; (s) → NH4+ (aq) + NO3- (aq). When 1.25 g of NH,NO3 dissolves in…

A: