Classify each process as exothermic or endothermic.(a) dry ice subliming (changing from a solid directly to a gas)(b) the wax in a candle burning(c) a match burning

Q: Molten gold poured into a mold solidifies at atmospheric pressure. With the gold defined as the…

A: When the heat is given off from the system, then the reaction will be an exothermic reaction. When…

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: Water (2430 g ) is heated until it just begins to boil. If the water absorbs 5.85×105 J of heat in…

A: The specific heat can be defined as the amount of heat per unit mass that is needed to raise the…

Q: Molten gold poured into a mold solidifies at atmospheric pressure, with the gold defined as the…

A: The given information says that molten gold is poured into mold which gets solidify by cooling down…

Q: If 20.0 g of copper cools from 35.0°C to 32.8°C and loses 38.6 Joules of heat, what is the specific…

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Q: 21. Which of the following reactions releases most energy to the surroundings? *

A: l

Q: Which of the following cannot leave or enter a closed system: heat, work, or matter?

A: Closed system  that exchange energy and not the matter with surrounding

Q: How is kinetic and potential energy differ?  How are they related?  Please citean everyday situation…

A: When an object is at rest the body is said to possess potential energy. in another case when the…

Q: ) Listen Which one of the following is an endothermic process? Freezing water O Condensation of…

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Q: which of the following has the greatest amount of potential energy  A. a ball at the top of a hill…

A: answer:- This question is answered by using the simple concept of potential energy which is directly…

Q: Rank the physical and chemical changes in order of decreasing of the amount of energy released: (a)…

A: If the quantity of water that is condensed in and subsequently precipitated from a cloud is known,…

Q: H,O*, heat

A: The given molecule is named as heptane-2,6-dione, and is reacting with H+ in the presence of heat…

Q: heat is typically measured in .c .f .joules .grams

A: The form of energy which is transferred between the systemns having different temperatures is known…

Q: a ball has a kinetic energy of 106 J. If the ball is moving at a velocity of 2.51 m/s, what is the…

A: Since , Kinetic energy =1/2 mv 2 Where m = mass (in kg ) V= speed (in ms -1)

Q: Identify the following as kinetic of potential energy examples: -Hitting a cue ball in a billiards…

A: Kinetic (movement) energy is a type of energy that outcomes from an item's movement. There are…

Q: A 63.3 g sample metal with a specific heat of 0.368 J/g°C is heated using 1873 J of energy. By what…

A:

Q: ng kinetic energy

A:

Q: How much heat, in Joules, is absorbed by 60 g of water in order to increase in temperature from 23°C…

A: Interpretation: The amount of heat, in joules absorbed by 60 g of water in order to increase in…

Q: If 57 J of heat are added to an aluminum can with a mass of 17.1 g, what is it's temperature change

A: Given information:Mass of aluminum (m) = 17.1 gAmount of heat (q) = 57 J

Q: equivalent

A:

Q: When 435 J of heat is added to 3.4 g of olive oil at 21°C, the temperature increases to 85°C. What…

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Q: When 417 J of heat are added to 35.0 g of vinegar at 27 degrees Celcius, the temperature increases…

A: Specific heat is the amount of heat needed for one gram of a substance to increase its temperature…

Q: Is gas escaping from an opened soft drink anexample of a chemical or a physical change? Explain.

A: In physical change there are no new substance created. Easy physical techniques may be used to…

Q: Which of the following is not a form of energy?

A: Capactity to do work is called energy various types of energies are   1. Thermal energy   2.…

Q: What is the substance undergoing a chemical or physical change known as?

A: A substance undergoing a physical or chemical change known as reactant. reactant is the substance…

Q: classify whether it is greater than, less than, or equal to.

A:

Q: The following particulate-level diagram best represents a(n).

A: We are given a particulate-level diagram as follows:

Q: the kinetic energy of particles

A: The kinetic energy of the Gas is greater than the kinetics of liquid, greater is the kinetic energy…

Q: How much heat, in Joules, is absorbed by 54 g of water in order to increase in temperature from 18°C…

A: Given that:  Mass of water = 54 g Increase in temperature , t =  (55-18 )oC = 37 oC

Q: What energy transformations take place when a moving car brakes and skids to a stop? Select all that…

A: According law of thermodynamics energy can never be created and can't be destroyed. It converted…

Q: A chemical reaction takes place to allow hand warmers to give off heat. This is an example of a(n)…

A:

Q: Which state has more Kinetic energy?a) Liquid Water b) Solid water c) Water vapor

A: The kinetic energy is energy possessed by an object due to its virtue of motion.

Q: how many joules of heat are absorbed?

A:

Q: The temperature of 100 mL of water changed from 10 degrees C to 15 degrees C during the phase of…

A: we can relate the heat change of a system to the product of the mass of the system, the specific…

Q: The average kinetic energy of water molecules in a swimming pool of boiling water is larger than a…

A: 1. False Both swimming pool and cup are open systems, the heat released by the water in both systems…

Q: H*, heat OH C. H, H.C

A:

Q: An example of using chemical energy is O a walking O b looking at the sun O c running d. eating

A:

Q: What does the Law of Conservation of Energy state?

A: According to this law "energy cannot be created nor destroyed only changed in form" .

Q: Once he executes the daring jump out of the plane the skydivers energy is converted to what type of…

A: When we have velocity then the kinetic energy is considered.

Q: In which state of matter do the particles of a chemical have the highest kinetic energy?

A: The state of matter in which the particles will be packed loosely will have maximum movement of the…

Q: U specific heat of water O final temperature of metal final temperature of water initial temperature…

A:

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…

Q: A pan is placed over a gas stove. Describe which would be endothermic and/or exothermic (pan and…

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

Q: Heat and energy are both measured in joules, yet are not quite the same thing. Explain what is the…

A: First we have to define Heat and Energy.

Q: Units of Energy?

A: 1.) Joule It is the amount of energy transferred to an object when one newton force is applied to…

Q: of potential energy or kinetic energy.

A: Potential energy is defined as the energy possessed by the body by virtue of its position (energy…

Q: (Q2) Which of the following is an endothermic process? Water freezing Riding a bike up a hill Any…

A:

Q: What does the law of conservation of energy state?

A: Anything which has mass and consumes space in surrounding is known as matter. Matter can be present…

Q: A typical candy bar contains 281 food Calories, which is 281 kcal. How many kilojoules are contained…

A: Given that : Energy provided by one candy bar = 281 kcal. We have to calculate the kilojoules of…