Classify the following processes or chemical reactions as endothermic or exothermic Group of answer choices A firework exploding = Exo or endo?                                                    Sweat evaporating on skin, cooling it= Exo or endo?                                                    A butane lighter burning= Exo or endo?                                                    A chemical heat pack being used to warm a hand= Exo or endo?

Q: Sunlight Oxygen Carbon Dioxide Chlophyll Glucose Water Living plants produce glucose in the process…

A: Given that the photosynthesis equation as follows,6CO2(g)+6H2O(g)+energy→C6H12O6(s)++6O2(g)we are…

Q: Classify the following processes as exothermic or endother-mic: (a) freezing of water; (b) boiling…

A: The processes in which heat energy is absorbed are called as endothermic processes and the processes…

Q: Which has more kinetic energy: a 0.0018-kg bullet traveling at 403 m/s or a 5.3  107-kg ocean liner…

A: As we know kinetic energy involved the motion. Therefore the formula we are going to use to…

Q: What is the ΔE in units joules for a system releasing 428 calories of heat its surroundings and has…

A: a system releasing 428 calories of heat its surroundings and has 1255 J of work done on the system

Q: Data Mass of water: 100.3767g Initial mass of food: 0.0931g Initial temperature of water: 23 degree…

A: Given data: Mass of water: 100.3767 g Initial mass of food: 0.0931 g Initial temperature of water:…

Q: Fill in blanks with appropriate words: Blank 1- a system becomes no change, warmer or cooler? Blank…

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Q: 80.2 grams of a metal that is at temperature 95.15 °C is placed in 257.0 mL of water at 19.06 °C.…

A: Given mass of metal = 80.2 g density of water = 1g/ml volume of water = 257 ml specific heat of…

Q: 3. Classify the following processes as exothermic or endothermic: (a) freezing of water; (b) boiling…

A: The answer to the following question is: Exothermic reaction : Exothermic reactions are processes…

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Q: Based on the law of conservation of energy, which of the following describes the transformation of…

A: Option D is the Correct Choice.

Q: Classify each process as exothermic or endothermic. (a) gasoline burning in a car(b) isopropyl…

A: Every chemical reaction involves a change in energy either by taking some energy from the…

Q: J cal kJ 598 113 0.810

A: To convert the energy units, suitable conversion factors are required. The given energy units are…

Q: which of the following statements best describes what occurs when a bowl of soup is warmed from 20…

A: To answer this question , we would check the heat gain and heat lose.

Q: A list of the calorie content of foods indicates that a 10 oz chocolate thick shake contains 333…

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Q: A coffee-cup calorimeter contains 50 mL of water with an initial temperature of 24.8°C 1.972 grams…

A: Given :-  Initial temperature of water = 24.8° C  Volume of water = 50 mL  Mass of metal = 1.972…

Q: The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7 kJ/mol.…

A: Given,  The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7…

Q: 80.2 grams of a metal that is at temperature 95.15 °C is placed in 257.0 mL of water at 19.06 °C.…

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Q: 125 mL of H20 is initially at room temperature (22.0°C). A chilled steel rod at 2.0°C is placed in…

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Q: 3. In the equation AHsoln = AHsohute + AHsolvent + AHmix the term AHsolvent is almost exclusively…

A: The formation of solution involves the breakdown of inter-molecular forces between the solute…

Q: repair crews to weld rails together. -) Ⓡ 2Fe(s) + Al2O3(s) DH rxn= -850 kJ -n, in grams, is formed…

A: Exothermic process is the one in which energy is liberated from the system to the surrounding in the…

Q: 41. A 25.0 g mercury is heated from 25 °C to 155 °C and absorbs 455 J of heat in the process. What…

A: Amount of mercury = m = 25 g  Initial temperature = T1 = 25 °C  Final temperature = T2 = 155 ° C…

Q: A chemical substance has a specific heat of 0.897 J/g-ºC. If an unknown mass of this substance is…

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

Q: 4. In a coffee cup calorimeter, the temperature of 35.0 g of water drops from 20°C to 15.6°C when…

A: Given: The mass of water and KBr is 35.0 g and 9.0 g, respectively. The temperature of water…

Q: Identify each process as endothermic or exothermic and indicate the sign of ΔH.(a) sweat evaporating…

A: When a chemical reaction occurs, energy is either released or absorbed in form of heat. The balance…

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

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

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

A: Energy can have several units like kJ, kcal, BTU

Q: Which one of the following is an endothermic process? A) ice melting B) Hydrochloric acid and barium…

A: Ans - C both ice melting and boiling soap  In a reaction if heat release it is exothermic process or…

Q: A metal radiator is made from 13.96 kg of iron. The specific heat of iron is 0.449 J/g °C. How much…

A: Given;

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Q: 3. To the cooled anhydrate, CuSO4, of Part I, a student added about 5 mL of distilled water and then…

A: we are discuss whether the rehydration of copper(II) sulphate exothermic or exothermic process.

Q: -ntify the following as exothermic or endothermic. q = -1200 J AH = 527 kJ Two chemicals mis…

A: 1)     q = -1200 J   HEAT GIVEN BY THE SYSTEM IS TAKEN AS NEGATIVE,CLEARLY HEAT IS GETTING OUT OF…

Q: A coffee-cup calorimeter contains 70 mL of water with an initial temperature of 24.9°C. An unknown…

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Q: You have the six pieces of metal listed below, plus a beaker of water containing 300 g of water. The…

A: The standard enthalpy of formation is the enthalpy change for the formation of 1 mol of the compound…

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

A: We are having certain quantity with which we have to do the unit conversions. We have to convert…

Q: chemistry

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

Q: A 38.3 g sample of a metal is heated to 86.3 °C and placed into coffee cup calorimeter containing…

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Q: |The specific energy and density of gasoline is -47.3 MJ/kg and 716 kg/m³, respectively. What is its…

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Q: A piece of metal weighing 98.4 g with a specific heat of 0.46 Jg-¹ °C-1 at 1028.6 °C is dunked into…

A: Given that,  The weight of the metal piece is mM = 98.4 g, The specific heat of the metal is CM =…

Q: A piece of metal weighing 52.3 g with a specific heat of 0.54 J9°C-l at 1103.2 °C is dunked into a…

A: Given data mass of metal: mmetal=52.3 g Specific heat of metal: cmetal=0.54Jg °C Initial temperature…

Q: 2116.16 J of energy is equivalent to how many calories?

A: Given :- 2116.16 J of energy  To calculate :- Energy in calorie.

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

A:

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

A: Given;  The joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J 1 kilojoule (kJ) = 1000 J

Q: What is the ΔE in units of joules for a system absorbing 675 J of heat from the surroundings and has…

A: As we know that if the quantity of heat transferred from the surrounding to the system is q and work…

Q: 1. Determine if each of the following is an example of an endothermic or exothermic process. a. When…

A: When water dissolves a substance, the water molecules attract and bind to the particles of the…

Q: Need help  solving questions 3a, 3b and 3c? Thanks!

A: Here mass of water and mass of iron, heat capacity of water and iron are given. And heat…

Q: 50 g of solid sodium hydroxide is dissolved in 175 mL of water. Using a coffee-cup calorimeter, the…

A: According to guidelines i can answer only 1st question. Please repost the other questions…

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (1) +302(9) CO2 (9)…

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Q: Part I: Specific Heat of a Known Metal Metal:  _______Cd________     Trial 1   Mass of metal…

A: The amount of heat transferred by a system is calculated as follows,…

Q: If a 33.76 gram piece of porcelain which has a specific heat of 1.07 J/goC absorbs 1,936.56 J of…

A: Given: Mass of the porcelain piece is 33.76 g. Specific heat is 1.07 J/g °C. The energy absorbed is…

Q: The calorimeter contains 900. g of water and the temperature change is 8.32 °C. The heat capacity of…

A: