A NEGATIVE S value indicates an exothermic reaction thus releasing heat to the surroundings. True or False? If false change the capital word to the correct answer.

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 343. kJ during a…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: .When 198 Joules of heat are added to 5 grams of methane gas at -10°C, the temperature of the…

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 191. kJ during a…

A: The enthalpy change of the given reaction is = -191. kJ The work done by the gas mixture is =-63. kJ…

Q: The specific heat of a substance is the amount of heat required to raise the temperature of one gram…

A: Given, the mass of substance =45.2 graminitial temperature =29.4 °Cfinal temperature =66.8 °Camount…

Q: Determine the final temperature of sample with a specific heat of 1.1 J/g°C and a mass of 385 g if…

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Q: A calorimeter is used to measure the heat absorbed or released in a chemical .1 or physical process…

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Q: In a similar study, a student determines that a sample of water in a calorimeter absorbs 80.5…

A: The heat absorbed by the water will be equal to the heat released by zinc.

Q: Which of the following statements is/are CORRECT? 1. A system is defined as an object or collection…

A: The Thermodynamics is the study of heat inside the system. The system is subject to change in terms…

Q: 5. Calculate the approximate final temperature of water in a coffee cup calorimeter if 33.9 kJ of…

A: Use calorimetry principle to get answer Heat flow from high temperature to low temperature. Heat=…

Q: An advertisement for a commercial hand warmer claims that the hand warmer works because a chemical…

A: Answer:- This question is answered by using the simple concept of exothermic reaction in which het…

Q: Match each of the following with its correct answer In the following thermochemical equation:…

A: Since you have posted multiple question will solve the first question for you to get the remaining…

Q: An ideal gas in a cylinder fitted with a piston expands at constant temperature from a pressure of 9…

A: Given data : Temperature (T) = Constant Pressure (P) = 9 atm Volume(V) = 7.0 L to 17 LConsatnt…

Q: n the calorimetry experiment was used to measure the heat of reaction for an endothermic process,…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: For an exothermic reaction, how is the measured temperature change affected if some of the heat…

A: The amount of heat involved in a chemical of physical process is measured using the device called…

Q: How do I find heat absorbed by a calorimeter alone, and also heat absorbed by the conents of the…

A: The amount of heat or energy released or gained during the process is measured by using calorimeter.

Q: Which of the following equations is a mathematical definition of enthalpy? Ο ΔΗ-ΔG- TAS Ο ΔΗ-ΔS- ΤG…

A: According to the Gibbs free energy equation :  The energy associated with a chemical reaction that…

Q: Computation of Calories per Mass of Food Mass of can (g) 12.63 Mass of can and water (g) 111.47…

A: The data given is,

Q: Choose true or false. If an air craft is flying at constant pressure then the extent of enthalpy…

A: To find: Whether the given statement is true of false.

Q: Draw an enthalpy diagram for a general exothermic reaction; label the axis, reactants, products, and…

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Q: Draw an enthalpy diagram for a general endothermic reac-tion; label the axis, reactants, products,…

A: An enthalpy diagram for a general endothermic reaction; label the axis, reactants, products, and ΔH…

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 124. kJ during a…

A: Given, Change in energy,∆U = 124. kJ Work done, w = -200 kJ

Q: How are enthalpy of a reaction and temperature change related?

A: Relation of enthalpy of reaction and temperature change:

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 175. kJ during a…

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Q: Constants Periodic Table The heat capacity of an object indicates how much energy that object can…

A: Part B. When the amount of heat require to raise the temperature of one mole of a pure substance by…

Q: A chemical reaction that gives off heat to its surroundings issaid to be and has a value of ΔH.(a)…

A: Exothermic reactions can be defined as a chemical reactions which are accompanied by evolution of…

Q: Methyl alcohol (CH3OH) is also known as wood alcohol and can be used as fuel. When one mole of…

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Q: A 56.43 g sample of iron (with a heat capacity of 0.450 J/g·°C) is heated to 100.0 °C. It is then…

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Q: How much heat is absorbed by the surrounding if it does 43 J of work, decreasing the energy of the…

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Q: A calorimeter is used to measure the enthalpy of a reaction. Label the system and the surroundings.

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Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 249. kJ during a…

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 222. kJ during a…

A: The enthalpy change of the given reaction is = +222. kJ The work done by the gas mixture is =-167.…

Q: Cite an analogy that best interpret ENTHALPY

A: ANSWER IS

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 140. kJ during a…

A: Enthalpy of a mixture of gaseous reactants increases by 140. KJ  It means enthalpy change (∆H) = +…

Q: ? Zn(Hg), HCI AICI3, heat heat

A: Let us note some points t-butyl is a large group and thus the major product will be para product…

Q: 9. How much heat will be transferred when 14.9 g of ammonia reacts with excess oxygen according to…

A: Given :- 4NH3 + 5O2 →4NO + 6H2O  ∆H = -1170 kJ  To calculate :-  Amount of heat transferred on…

Q: NaOH N: КОН H,O, heat D,0 NEt,, heat

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Q: Choose the correct statement below. Choose one: Condensing steam to water is endothermic, and…

A: Applying kinetic theory of matter.

Q: The specific heat of aluminum is 0.214 cal/g.°C. Determine the energy, in calories, necessary to…

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Q: Measurements show that the energy of a mixture of gaseous reactants increases by 396. kJ during a…

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Q: The specific heat capacity of water is 4.184 J/g°C and the specific heat of air is 1.006 J/g°C If I…

A: Given: The specific heat capacity of water, C​​​​​​water =4.184 J/g°C The specific heat of…

Q: If the calorimetry experiment was used to measure the heat of reaction for an endothermic process,…

A: In an endothermic reaction, the energy is required to make the reaction spontaneous, so, the heat is…

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 107. kl during a…

A:

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 301. kJ during a…

A: Work done on mixture = - 104 kJ ∆U = +301 kJ

Q: For an exothermic reaction, how is the measured temperature change affected if some of the heat…

A: Consider that an exothermic reaction is taking place inside a calorimeter with water as its…

Q: Find one chemical reactions that produce heat (exothermic) and one chemical reaction that absorb…

A: CaO + H2O → Ca(OH)2  this an exo thermic reaction  H2+I2 →2HI this is an endo thermic reaction

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 169. kJ during a…

A: Answer :- 1. Change in enthalpy of gas mixture = ∆H = +337 kJ  2. Endothermic…

Q: Question is attached

A: Specific heat is defined as the amount of heat required to raise the temperature of one gram of a…

Q: Which statements are true? A combustion reaction is exothermic. When energy is transferred as heat…

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Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 174. kJ during a…

A: Energy of a mixture of gaseous reactants decreases by 174. kJ Therefore, ∆U = - 174. kJ   Work  done…