Which of the following processes is endothermic? O The combustion of propane O The condensation of ethanol O A hot cup of coffee (system) cools on a countertop O The melting of water

Q: The evaporation of water is endothermic:H2O(l) → H2O( g) ∆Hrxn = +44.01 kJWhat minimum mass of water…

A: Determination of no. of mol of H2O that will evaporate from 175 kJ/mol: n=175 kJ44.01 kJ/mol=3.9764…

Q: which of the ff will always result in an endothermic process a. work done on the system, heaet…

A: As the reaction is endothermic means enthalpy of the reaction is positive. Means by the reaction,…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 273. kJ during a…

A: Given :  1. Change in Enthalpy = + 273 kJ  2. Work done = 122 kJ .

Q: Consider the following chemical reaction which produces HCI from its constituent elements: H2 (g) +…

A: The correct option with explanation is provided in the next step:

Q: When 20 g. of Aluminium is heated from 90oC to 115oC, 105 calories is required. What is the molar…

A: The molar heat capacity of aluminium is 5.6658 cal/mol°C.

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 291. kJ during a…

A:

Q: is the amount of heat required to increase the temperature by 1.0 °C of a 1.0 g substance. O…

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Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

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Q: The heat energy required to raise the temperature of one gram of a substance one kelvin at constant…

A: The required heat energy to raise the temperature of the substance by one kelvin at constant…

Q: A calorimetry experiment where 5.0 mol of NH4* is reacted with 5.0 mol of CN is conducted in 35.0 g…

A: Calorimetry is used to measure the change in enthalpy during a chemical process. The value of change…

Q: 35g of Gold (sp = 0.0308 cal/goC) at 100oC is added to 40g of Water at 22oC in a Coffee-Cup…

A: Given, Mass of gold, mgold = 35 g Initial temperature of gold, Tgold = 100 °C Specific heat of gold,…

Q: A 37.2 g sample of zinc is heated to 124oC. It is then placed in a coffee cup calorimeter containing…

A: Mass of sample of Zinc = MZn = 37.2 g Specific heat of zinc = cZn = 0.387 J/(g oC)  Temperature of…

Q: The following chemical equation, ΔΗ C (graphite, s) + 2 O2 (g) → CO2 (g) - 393. 5 kJ / mol - Is an…

A: Given reaction,         C(graphite, s)  +  2 O2(g)  →  CO2(g)    ∆H  =  - 393.5 kJ/mol

Q: Complete the thermochemical equation,H + (aq) + OH - (aq) ---> H 2 O (l) Ho = ______ kJ/mol …

A: Thermochemical equation:

Q: 1. ransferred from one system to another spontaneously? What is heat? How does heat differ from…

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Q: Which of the following will always result in AU > 0? O work done on the system, heat released by the…

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Q: Which of the following is an endothermic process? a. work is done by the system on the surroundings…

A: Introduction :  We have to tell which of the following is endothermic process .

Q: Are the following processes exothermic or endothermic? a. the combustion of gasoline in a car engine…

A: Exothermic reaction: The reaction or process in which energy is released is known as exothermic…

Q: Use the following data to determine whether the conversion of diamond into graphite is exothermic or…

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

Q: The heat of combustion for one mole of carbon is 394kJ, C(s)+O₂(g) + CO₂(g). How much heat would be…

A: Given information: Heat released during combustion of 1 mole of carbon is 394 kJ. The chemical…

Q: The amount of heat required to raise the temperature of 1 g of a substance by 1 °C is O Internal…

A: The term heat capacity can be defined as the physical property of a given object and therefore is…

Q: The contents of the closed box in each image represent a system, and the arrows show the changes to…

A: From the first law of thermodynamics,  □U = q + w  Where, q = heat      w = work   Prodces A) q =…

Q: Which of the following which is/are true about the internal energy, E?   (i) The total energy of…

A: Internal Energy is defined as energy dissociated with the random, disordered motion of Molecules.

Q: A particular chemical reaction is characterized by AHpxn =+250 kJ/mol. Which of the following…

A: Hello. Since your question has multiple questions, we will solve the first question for you. If you…

Q: 1. Which of the following does not result in a change in the internal energy of the system? a. work…

A: Internal energy of the system is not changed in which of the changes: a. Work is done on the system…

Q: LP gas burns according to the exothermic reaction:C3H8(g) + 5 O2(g) -------->3 CO2(g) + 4…

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Q: A calorimeter contains 140 g water. The calorimeter and the water inside are both at 24 °C. A piece…

A: Please find the answer attached

Q: When a 7.94-g sample of solid potassium chlorate dissolves in 46.3 g of water in a coffee-cup…

A: Mass of sample = 7.94 g  Mass of water = 46.3 g Initial temperature = 23.00 °C Final temperature =…

Q: During a(n)_ process, energy is transferred from the system to the surroundings.

A: System : A specified part of the universe with real (or) imaginary boundaries Surroundings : The…

Q: Which Slatement is True? O a. The heat capacity of a substance does not depend on the amount of…

A: extensive properties are the properties which depends upon the amount of the substance , heat…

Q: What does C represent in the change in heat formula? q= AH = mx C × AT O specific heat capacity O…

A: In given formula  C is specific  heat capacity.

Q: A sample of aluminum metal absorbs 9.86 J of heat, and the temperature of the sample increases from…

A: The specific heat of a substance is defined as the amount of heat required to raised the temperature…

Q: An ideal gas expands against a constant external pressure of 2.0 atm from 20 L to 40 L and absorbs…

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Q: Which of the following is/are TRUE for an endothermic process in an open or closed system? I. The…

A: We have to tell which statement is true.

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 394, kJ during a…

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Q: given the thermochemical equation:  CH4 (g) + 2 O2 (g) -> CO2 (g) + 2H2O (l)  H = -890kJ is this…

A: Exothermic reaction: A reaction which evolves heat is called exothermic reaction. In an exothermic…

Q: Which one is not an acceptable thermochemical energy unit? O joule O Cal/g-K O calorie O kg-m2-s-2

A: The ability to do work is known as energy. If an object does work on some other object, the energy…

Q: Both graphite and diamond burn.C(s, diamond) + O2(g) ⟶ CO2(g)For the conversion of graphite to…

A:

Q: Which of the following processes always results in an increase in the energy of a system? O The…

A: Which of the following processes always results in an increases in the energy of a system has to be…

Q: Classify each process as endothermic or exothermic. What is thesign of ∆H for each process? Explain…

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

Q: The heat of combustion (AH) for propane (molar mass 44.11 g/mol) is -2222 kJ/mol. The heat generated…

A: Given data Heat of combustion of propane ∆H=-2222 KJ/mol molar mass of propane = 44.11 g/mol mass of…

Q: What sum determines the change in energy of a system? O heat released and work performed O heat…

A: A process in which heat energy is transferred from a system to the surroundings is referred as…

Q: When 10 g of citric acid was burned in a calorimeter containing 1500 g of water, a temperature rise…

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Q: Which of the following statements is incorrect concerning the thermochemical equation below? 2SO_3…

A: The given reaction is :2 SO3 (g) → 2 SO2 (g) + O2 (g) ; ∆H° = 198 kJa. the enthalpy of the reactants…

Q: The combustion of toluene has a delta Erxn of -3.91x103 jk/ mol . When 1.55 g of toluene (C7H8)…

A: Concept :  in a bomb calorimeter the heat transfered is basically the internal energy change and not…

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 316. kJ during a…

A: The relation between change in enthalpy, work, and internal energy is given as: ∆H=∆U+w…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 254. kJ during a…

A: Given :- Q = +254 KJ positive because energy is absorbed by system W = +185 KJ positive because work…

Q: Liquefied petroleum (LP) gas burns according to the following exothermic reaction:…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: if the specific heat capacity of iron (Cs ) is 0.499 J/g * degree celsius. what is the heat capacity…

A: Number of mole=mass/molar mass

Q: The combustion of 1 mole of wood alcohol (methanol) releases 341 kJ of heat. Convert the following…

A: Given Combustion of one mole of ethanol releases heat 341 kJ Given equation2 CH3OH (l) + 3O2(g)   →…