Why does hammering a piece of sheet metal cause the metal to heat up?

Q: Transition State Ea Reaction Coordinate

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Q: The same amount of heat is transferred to equal masses of each metal listed below

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Q: A 500-g piece of metal (a steel) is dropped into 775 mL of water at 23.5 °C. The final temperature…

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Q: What are the products? excess HI heat

A: Reaction of ether with excess HI and heat leads to the formation phenol and ethyl iodide.

Q: How much heat was absorbed (in J) if a 16.4 g sample of an alloy with a specific heat of 0.840 J/g…

A: Using the equation of specific heat capacity:

Q: Knowing the direction of heat flow, explain why if you leave a hot bowl of soup out in the open on…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: In order to produce 980 kJ of heat, how many grams of H2 must burn? H2O) + 250 kJ H2g) + O 0.54 g…

A: 1- First we will determine the moles of H2 gas :  According to the chemical reaction equation,…

Q: What is the specific heat of silver?

A: The amount of heat required per unit mass to raise the temperature of the substance by one degree…

Q: Determine the amount of heat (in kJ) associated with the production of  1.40  ×  104  g of  NO2…

A: The heat quantity that is absorbed or released, when any chemical reaction is occurred, isspecified…

Q: 1) Write the balanced equation for the heat of formation of magnesium oxide and zinc oxide.

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Q: Calculate ΔHrxn values for the following equations using standard enthalpies of formation (ΔHof)…

A: Consider the given balanced reaction as; CaCl2.2H2O s → Ca2+aq + 2 Cl-aq + 2 H2O l Standard enthalpy…

Q: What what happens when you heat an iron rod on a flame

A: Given An iron rod, whose behavior when exposed to flame has to be discussed.

Q: Which statement is true regarding the thermochemical equation    A +  B  + KJ à  AB A. The reaction…

A: 7. Given reaction is,  A + B + kJ --> AB  We need to find if this reaction is exothermic or…

Q: Thermite reaction can be used to produce molten iron for welding railway tracks together. Fe2O3(s)…

A: the solution is as follows:

Q: You should have noticed that the Styrofoam ball rolled slightly towards the rod and then appeared to…

A: Rubbing the plastic rod, the rod will get an electrical charge. Which means there is a build up of…

Q: The boiling point of a liquid is determined by heating it slowly and recording the temperature when…

A: The temperature at which the liquid's vapor pressure exceeds the atmospheric pressure is considered…

Q: What effect does the initial temperature of the water have on the change in temperature of the water…

A: While hot metal was added into the water. The hot metals lose its temperature (energy) into the…

Q: When a system absorbs heat, a part is stored within the system as the energy of internal motions of…

A: When a system absorbs heat, a part of it is  stored within the system as the energy of internal…

Q: The density of SIO2 is 2.20 g/cm3. The density of elemental silicon is 2.33 g/cm3. How much volume…

A: Density ( d ) is the ratio of mass of the substance ( m )  to its volume ( V ) . i.e  density (d) =…

Q: What type of a system and process does water heater that takes in cold water a

A: Heat transfer process takes place in a heater, where the energy is derived from the an external…

Q: What is the mass % of work in Calcium hyboworkite. A/

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Q: Write a balanced chemical equation for the standard formation reaction of solid potassium dichromate…

A: A question about balancing the chemical reaction, which is to be accomplished.

Q: By now you’ve noticed that the cards represent charged ions. If you want to combine these ions to…

A: cards represent the charged ions. Now cards are combined, then cards of opposite charged must be…

Q: The heat of formation of Fe2O3(s) is 826.0 kJ/mol. Calculate the heat of the reaction when a 43.20 g…

A: Given,Heat of formation of Fe2O3 = 826.0 kJ/molMass of iron, Fe = 43.20 gMoles of Fe can be…

Q: Sound require a medium in order to transfer energy. does does not

A: Sound waves are basically a form of longitudinal waves which are formed by compression and…

Q: 20.0 grams of water at 85ºC is added to 35.0 grams of water at 10.0ºC in an insulated container.…

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Q: An engineer is designing a wire using an unknown material that will carry large amounts of…

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Q: What is the quantity of heat energy is required to decompose 46.6 g of liquid water into hydrogen…

A: Number of moles of water is determined as follows,

Q: The temperature of a 33.7 g sample of metal increases by 27.2°C after absorbing 201.7 J of heat.…

A: Interpretation: The temperature of a 33.7 g sample of metal increases by 27.2°C after absorbing…

Q: formation?

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Q: Propose a metal for determining the specific heat for a metal like sodium which reacts violently…

A: Method for determining the specific heat for a metal like sodium which reacts violently with water:…

Q: student is planning to determine the specific heat capacity of iron. To do this experiment the…

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Q: relationship of transportation and thermodynamics?

A: In physics, the study of transport phenomena deals with the exchange of mass, energy, charge,…

Q: What will happen to the fermi energy when two identical metals are joined together?

A: When two metals join together, the electrons will flow from the metal which have high fermi level to…

Q: You put a pot of water on the stove and the water begins to boil. System: Surrounding: Direction of…

A: Exothermic reaction are those reaction in which heat is evolved while reaction in which heat is…

Q: Welding utilizes a variety of fuels. Two such fuels identified for comparison are acetylene (ethyne…

A: Answer: Amount of energy released during the combustion of 1g of fuel is called as its calorific…

Q: When you put the iron cube in the olive oil and the brick cube in the water what loses heat more…

A: Heat capacity is the quantity of heat required to increase the temperature of an object or a…

Q: A copper block of volume 1 L is heat treated at 500ºC and now cooled in a 200-L oil bath initially…

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Q: Place about 3 mL of hydrochloric acid in a test tube. Then add a strip of magnesium to it. At the…

A: To find  The chemical reaction which occurred In terms of heat exchange, what will be the reaction?

Q: What is the specific heat of iron, if it requires 1050 J of heat energy to raise the temperature of…

A: Iron  is transition metal and atomic number of Iron is  56g

Q: A sculptor has prepared a mold for casting a bronze figure.  The figure has a volume of 225 mL.…

A: Heat required by compound is determined by the knowledge of its mass, its specific heat capacity and…

Q: In joules, how much heat is released when 36.0 g of Ag cools from 181. to 129.?

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Q: What is the specific heat of water? (cwater)

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Q: Choose the formation reaction that represents for liquid methanol (CH3OH):       a.  CH3OH(l)   →…

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Q: Calculate the enthalpy change for the reaction of magnesium and water using Hess’s Law.

A: According to Hess's law, the enthalpy change (∆H) accompanying a chemical reaction that proceeds via…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.