Explain Hess's law in your own words

Q: A 275 g piece of iron [Cp = 25.09 J/mol°C] is heated to a temperature of 57.0°C and then placed in…

A: The number mole (n) for 275 g of iron is calculated as shown below where m is the mass of iron and M…

Q: 5.22 Explain the meaning of this thermochemical equation:

A: The reactions in which the energy in the form of heat is absorbed are named as endothermic reaction…

Q: What is the main use of Hess’s law?

A: Hess’s law: According to this law, the energy change in a complete chemical reaction is equivalent…

Q: A sample of solid tungsten is heated with an electrical coil. If 19.2 Joules of energy are added to…

A: Given: heat added = 19.2 J mass of tungsten = 11.3 g  final temperature = 35.1°C specific heat of…

Q: What is the main application of Hess’s law?

A: Hess's law is used for calculation of enthalpies of reactions with the help of enthalpies of…

Q: Substance "C" is identified to have a specific heat capacity of 0.452 J/(g.°C). Which substances…

A: Answer: Specific heat capacity of the substance is defined as the amount of energy added into the…

Q: CHa (8) + 3 02 (g)- 2 CO2 (8) + 2 H20 (e) Standard enthalpies of formation of CO2 (g) and H20 (e)…

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Q: 5.7 Stoichiometry is based on the law of conservation ofmass. On what law is thermochemistry based?

A: Thermochemistry based on which theory has to be proposed.

Q: 1. Select the incorrect statement. q is the symbol for heat q = mC;AT The unit for g is Joules q is…

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Q: a. State the meaning of the following thermochemical equation *b.Calculate the amount of heat…

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Q: 0.020 mole of gold metal that has a specific heat capacity of 2.10 J/g ⁰C released 5.20 kJ of heat.…

A: Given :-  Number of moles of gold = 0.020 mol  Specific heat capacity of gold = 2.10 J/g°C  Heat…

Q: Two 20.0 g ice cubes at −17.0 ∘C are placed into 245 g of water at 25.0 ∘C. Assuming no energy is…

A: Given,Mass of two ice cubes, mice = 2 * 20.0 g = 40.0gMass of water, mwater = 245 gInitial…

Q: A 5.35 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: The total mass inside the calorimeter in grams = mass of salt + mass of water…

Q: The specific heat capacity of solid iodine is 0.427 J/g °C. Calculate the final temperature (°C)…

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Q: Substance "C" is identified to have a specific heat capacity of 0.452 J/(g.°C). Which substances…

A: To estimate about specific heat , we would check heat energy added and temperature change.

Q: 7. How many grams of iron can be melted if the heat capacity is 876J/g and 3999) are available?

A: Heat capacity is defined as the amount of heat to be supplied to a given mass of a material to…

Q: Sulfur, S8, burns in air to produce sulfur dioxide. The reaction evolves 9.31KJ of heat per gram of…

A: sulfur burns in air to produce sulfur dioxide. the reaction evovles 9.31 KJ of heat per gram of…

Q: A student mixes 84.3 g of water at 58.9°C with 44.9 g of water at 26.9°C in an insulated flask. What…

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Q: Discuss the definition of the terms exothermic and endothermic. Give an example of an thermochemical…

A: The exothermic reaction is the reaction that releases heat. The heat of the reactant is higher than…

Q: Order the substances (A, B, C, D, and E) by their specific heat capacities from highest (5) to…

A: The curve given is,

Q: A student mixes 76.9 g of water at 71.3°C with 44.9 g of water at 23.1°C in an insulated flask. What…

A: From principle of method of mixtures we can use heat lost by the hot body is  equal to the heat…

Q: It takes 1.25 kJ of energy to heat a certain sample of pure silver from 12.0∘C to 15.2∘C. Calculate…

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Q: Express Hess’s law in your own words

A: Express Hess’s law in your own words

Q: What is the final temperature of water when 5.87moles of H2O releases 4.506kJ of heat energy. Assume…

A: In this question, we want to determine the Final temperature of water.  You can see details Solution…

Q: 1. Suppose you mix 21.0 g of water at 52.7° C with 54.9 g of water at 31.5° C in an insulated cup.…

A: Since you have posted multiple questions, we will solve only the first question for you according to…

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 sample of solid tungsten is heated with an electrical coil. If 28.9 Joules of energy are added to…

A: Given: heat added = 28.9 J mass of tungsten = 14.9 g  final temperature = 36.4°C specific heat of…

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: In the laboratory a student finds that it takes 19.7 Joules to increase the temperature of 10.3…

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Q: The temperature of a brass bar rises by 10.0°C when it absorbs 2.00 kJ of energy by heat. The mass…

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Q: Information gathered from the calorimetry experiment: Mass of Water = 213.4 g Specififc Heat of…

A: Given information: Mass of Water = 213.4 g Specific Heat of Hydrochloric Acid = 4.04 J/goC Specific…

Q: a 25.31 g sample of a substance is initially at 23.9 °c. after absorbing 2317 j of heat, the…

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Q: Hess's Law 1. State the Hess's Law.

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Q: What will be the final temperature of a 552-g sample of water, initially at 14.0°C, after 584 kJ…

A: Given,  Mass of water, m = 552 g  Heat, q = 58.4 kJ = 58.4x103 J  Heat capacity of water, Cp = 4.184…

Q: Two 20.0 g ice cubes at −16.0 ∘C are placed into 205 g of water at 25.0 ∘C. Assuming no energy is…

A: Given, Mass of two ice cubes, mice = 2 (20.0) g = 40.0g Mass of water, mwater = 205 g Initial…

Q: 6. Why can there never be a temperature less than 0 Kelvins? 7. How much heat is absorbed from a…

A: Given data,Mass of mercury=56.0g∆T=289K=289-273=16oCSpecific heat capacity of Hg=0.14J/goC

Q: 13. Define Heat Capacity and Specific Heat. What are their units? What is the relationship between…

A: Heat capacity -  It is defined as the amount of energy  required to raise the system's temperature…

Q: Cite an analogy that best interpret ENTHALPY

A: ANSWER IS

Q: An 49.84 g sample of aluminum is placed on a 43.49 g sample of copper initially at 85.24°C. If the…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only. 1)…

Q: Determine the final temperature of a gold nugget (mass = heat to a snowbank when it is lost. The…

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

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Q: Section 6: Multi-Step Heat Calculation How much heat energy is needed to heat 62.3 g of ice from…

A: Given:  Mass of ice = 62.3 gm  Moles of ice = 62.3/18 = 3.46 moles  Cp ice = 2.09 J/g°C  ∆Hfus =…

Q: From a thermochemical point of view, explain why a carbon dioxide fire extinguisher or water should…

A: Standard enthalpy of formation of MgO = -601.7 kJ/mol Standard enthalpy of formation of Mg(OH)2 =…

Q: 7. A 50.0 g sample of gold at 100.0 °Cis placed into a 75.0 g sample of water at 25.0 °C. What will…

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Q: A 23.56 g sample of a substance is initially at 23.7 °C. After absorbing 2083 J of heat, the…

A: The specific heat capacity is defined as the amount of heat requires to raise the temperature if 1…

Q: 20. A gold ring that weighs 3.81 g is heated from 25°C to 84.0°C and placed in 50.0 g of water at…

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Q: 5. The specific heat capacity of gold is 0.128 J/g °C. How much heat would be needed to warm 250.0…

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Q: 6. The surroundings is a region of a study that is singled out where energy can be transported back…

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