Classify the chemical changes as endothermic or exothermic. -campers burn wood to stay warm at night -a chemical change takes place in a container, making it feel hot to the touch -a chemical change takes place in a container, making it feel cold to the touch -pocket hand warmers start out at room temperature, and when the air-tight packaging is opened a substance contained in a pouch reacts with air and it quickly begins to feel hot.

Q: A calorimeter is charged with 57.9 mL of water at 25.0 °C. After a reaction takes place in the…

A: Given, Volume of water = 57.9 mL Density of water = 1.00 g/mL Initial temperature (Ti) = 25°C Final…

Q: What is AH when 1.40 mol of Sg reacts? Be sure your answer has the correct number of significant…

A: ∆H of the given reaction is = -20. 2 kJ  Given moles of S8 = 1.40 moles

Q: What is the difference between an exothermic and an endothermic reaction?

A: An exothermic reaction is a chemical reaction  in which energy is released during the reaction.…

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) 2HC1(g) AH = -184.6 kJ Reaction 2: 20F2 (g)…

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Q: Thermal Energy?

A: The total amount of kinetic energy within an object or sample is called Thermal energy.

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Given , 1 cal = 4.184 J 1kcal = 1000 cal

Q: A student places a block of hot metal into a coffee cup calorimeter containing 162.2 g of water. The…

A: 162.2 g of water.T1 = 21.3 oCT2 = 37.6 oC

Q: In a calorimetry experiment, a 41.9 g piece of metal at 110. °C is put into a cup of cool water that…

A: GivenMass of water = 92.1 g = MInitial Temperature of water = Ti = 22.0°CFinal Temperature of water…

Q: Select all of the following reactions or processes which would be considered endothermic (the system…

A: To Solve this problem first we have to know about exothermic and endothermic process .

Q: When NH4Cl(aq) reacts to form NH3(g) and HCl(aq), 21.07 kcal of energy are absorbed for each mole of…

A: We have to determine the value of ∆H for the given reaction

Q: Describe each of the following processes as endothermic or exothermic: The process of water changing…

A: 1. Endothermic process - a process in which, heat or energy is required for the completion of…

Q: In metric terms, a typical automobile averages 5.76 km/L of gasoline burned. Gasoline has a heat of…

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Q: Which of the following statements accurately describes an observation that would be made during the…

A: In Endothermic process , heat is required to carry out the process. Thus temperature decreases In…

Q: A student places a block of hot metal into a coffee cup calorimeter containing 168.5 g of water. The…

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Q: When (3.4100x10^2) Joules of heat are added to a sample, the temperature increases from…

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Q: Carbohydrates serve as a vital source of chemical energy to the human body. Carbohydrates are broken…

A: We have to convert 119 KJ = ? KCal

Q: A certain physical process requires 36.00 kilojoules (kJ) of heat.  Convert this quantity to…

A: Given : Energy in KJ = 36.00 KJ

Q: equivalent

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Q: A 20.00 g metal is heated in a test tube to 95.0 C and added to 50.0 g of water in a coffee cup…

A: At thermal equilibrium temperature of both metal and water will be same ,and heat lost by metal will…

Q: Benzene is a chemical compound in gasoline. When gasoline burns, the benzene reacts with oxygen. 2…

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Q: TUTOR Coffee Cup Calorimetry: Specific Heat I In the laboratory a "coffee cup" calorimeter, or…

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Q: You will find the final temperature when 5.00 grams of aluminum at 425℃ is placed in 50.0 grams of…

A: We know that  From the law of heat exchange Heat lost by substance= Heat gained by another substance…

Q: gold bar of  unknown amount absorbs 1.09 kJ of heat and raises its temperature from 5.3 °C to 72.2…

A: Heat absorbed, q = mCs∆T  ∆T = T2 - T1  T1 = Initial temperature T2 = Final temperature m = Mass of…

Q: For this question, you are trying to determine which beaker will have more heat absorbed and why.…

A: Answer:- This question is answered by using the simple concept of calculation of heat absorbed by…

Q: State whether these statements refer to either exothermic or endothermic processes: Combustion of…

A: Exothermic reaction: The reaction from which energy is released in the form of heat is called as…

Q: only water transferring energy to creating energy in increases endothermic slow down exothermic…

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Q: Is the following PE diagram representing an endothermic or exothermic reaction? PE (kJ) 250 200 150…

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Q: chemistry

A: Dear student I have given answer to your question in the image format.

Q: Water droplets condensing on the inside of a window on a cold day. Is this process exothermic or…

A: Exothermic Reaction :- The loss of heat during the reaction contain reactants concerted into product…

Q: Part IV—Chemical Reactivity and Energy Changes Reaction of metal with acid: Which metals reacted?…

A: An exothermic reaction is a reaction where heat is generated during the reaction, thus during an…

Q: A certain chemical reaction releases 14.6 kJ/g of heat for each gram of reactant consumed. How can…

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Q: A solid chemical called Instant Ice can be purchased, which when mixed with water at room…

A: Instant ice absorbs heat from the water at room temperature when instant ice and water are mixed…

Q: Classify each of the following as endothermic or exothermic. A. A beaker feels cold after a…

A: Exothermic reactions are the reactions that releases heat by increasing the temperature of the…

Q: Stainless steel accessories in cars are usually plated with chromium to give them a shiny surface…

A: Given the mass of chromium =5.00 graminitial temperature =23 °Cfinal temperature =50.8 °Camount of…

Q: Identify the following processes as endothermic or exothermic.

A: Since we know that  Endothermic Process : The process in which heat energy is absorbed by the system…