In a heating curve or cooling curve, what is happening during the diagonal parts of the graph when the temperature is changing?   Heat is being added or removed and changes of physical state are occurring.   The temperature is changing so no heat is being added to or subtracted from the substance.   The substance is being warmed or cooled.   The substance is changing from a solid to a liquid.

Q: Air 1.01 J/g degrees Celsius Copper 0.385 J/g degrees Celsius NaCl 0.864 J/g degrees Celsius After…

A: Specific Heat Capacity is the amount of heat required to raise the temperature of 1 gram of…

Q: A 100 mL sample of water at 109.0°C is added to a beaker containing 200 ml of water at 7.00°C.…

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Q: A 45.0 g sample of copper's temperature changes from 76.0 °C to 6.0 °C. The specific heat capacity…

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Q: Determine the final temperature when a 25.0 g piece of iron at 85.0 °C is placed into 75.0 grams of…

A: The amount of heat released from iron is absorbed by the water to raise its temperature. Let the…

Q: Explain how chemical reactions obey the law of conservation of energy. Include where energy is found…

A: Answer -  law of conservation of energy - The total energy of an isolated system remains constant…

Q: Calculate how much heat 32.0 g of water absorbs when it is heated from 25.0°C to 80.0°C. Specific…

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Q: 12.755 g of a mental initially at 99.0 degrees C are placed into 75.0 g of water initially at 23…

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

Q: Select every statement that is true about heat, temperature, and phase changes.

A: a- At 100° C, water is boiled which is its boiling point and it turns into vapour phase So it is a…

Q: The initial temperature of a 22-g sample of copper is 25°C. If the sample absorbs 236 J of heat,…

A: Provided initial temperature of copper(T1) =25°C Let final temperature of copper=T2 Absorbed heat…

Q: Water has a heat of fusion of 80.0 calories per gram .  If I have 8.62 grams of ice at its melting…

A: Answer

Q: A 24.817 gram sample of water with specific heat of 4.184 J/g0C changes temperature from 25.00 0C to…

A: Given :-  Mass of water = m = 24.817 g Initial temperature of water = Ti = 25.00 °C  Final…

Q: A 2.30-gram ice cube at water’s melting point is dropped into a glass of warm juice and gains enough…

A: Endothermic reactions are those reaction where energy is absorbed during the reaction. Similarly,…

Q: How much heat (in kJ) is needed when 133.43 g of water warms and boils from 33.45°C to 100°C?

A: The mass of the water sample is = 133.43 g The initial temperature of the water is = 33.45oC The…

Q: how many grams of water  would require 2.20 x 104 calories of heat to raise its temperature from…

A: Using formula for specific heat we have solved this problem.

Q: Macmillan Learning Classify the chemical changes as endothermic or exothermic. 7 # 3 E D C Anser…

A: An Exothermic Reaction is a reaction which releases energy as heat to the surrounding. Whereas an…

Q: Which of the following is true about specific heat? A) Specific heat is measured by dividing the…

A: Specific heat is defined as the amount of heat needed to raise the temperature of 1 gram of a…

Q: sports trainer applies an ice bag to the back of an injured athlete. Calculate the heat, in…

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Q: Lead has a heat of fusion of 23.140 J/g, along with a specific heat of o.12928 J/(g °C) in its solid…

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Q: 12. Which term is a measurement of heat? O Cold O Hot Temperature O warm

A: Measurement of Heat : The other form of Heat is Cold ,Hot , warm .

Q: 2. A student has a sample of water at 36.0°C and they add some ice, which melts. After the ice…

A: A pictogram is a diagrammatic representation of the given condition or procedure. Here, in the given…

Q: If you left equal masses of iron and water out in the sun on a hot day, which one would be hotter…

A: The compound that has the least heat capacity will experience the highest change in temperature when…

Q: a 44 gram piece of ice at 0 degrees celsius is added to a sample of water at 6.8 degrees celsius.…

A: The mass of ice is = 44 g The mass of water sample =? The temperature of ice is = 0 degrees celsius…

Q: True or False? If 25 grams of hot water are added to 35 grams of cold water, the heat lost by the…

A: The given statement is TRUE here

Q: When a 1.25 kg sample of water was heated in a kettle, its temperature increased from 16.4°C to…

A: Given: Mass of water = 1.25 Kg = 1250 g.                                         (Since 1 Kg = 1000…

Q: In joules, how much heat is released when 40.0 g of Ag cools from 189. to 122.? Enter a positive…

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Q: If 44.8 kJ of heat were added to 166 g of liquid water (specific heat of 4.184 J/g °C) at 18 °C, how…

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Q: How many grams of water at 17 °C  must be mixed with 180 g (about 6 oz) of coffee at 96 °C so that…

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Q: A piece of metal was placed into a 75.00 grams of water. The temperature of the water increased from…

A: Given , mass of water = 75.00 g Initial temperature Ti= 22.02°C Final temperature, Tf = 25.04°C…

Q: How much heat is absorbed by 68 g of ice when it melts? The heat of fusion of ice is 80. cal/g and…

A: 1) Mass of Ice is (m)=68 g 2) The heat of fusion of ice is (L)=80 cal/g

Q: 83.6 g of water at 28.7 degrees Celsius is heated. The water is warmed to 87.4 degrees Celsius. How…

A: Specific heat (S) :  The amount of heat energy needed to rise the temperature of one gram of a…

Q: How much heat is needed to melt 23.8 g of copper that is at an initial temperature of 21.7 °C? The…

A: The heat of a solution can be expressed by the following formula   Q=mCΔT Q=heat m=mass C=heat…

Q: A 64.58 g sample of lead has an initial temperature of 21.34 °C. The specific heat of lead is 0.129…

A: Answer:1It is a 2 step process:Heating of solid Pb up to its melting pointMelting of solid lead

Q: A 75.0 g piece of copper metal at 95.0°C is in contact with 30.0 g of water at 22.5°C.  Assuming no…

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Q: 1. Water has a specific heat of 4.184 J/g °C while glass (Pyrex) has a specific heat of 0.780 J/g…

A: It is based on the concept of specific heat capacity.It is defined as the heat capacity of the…