77. Calculate the amount of heat required to heat a 45-kg sample of ethanol from 11.0 °C to 19.0 °C. 79. If 89 J of heat are added to a pure gold coin with a mass of 12 g, what is its temperature change? 81. An iron nail with a mass of 12 g absorbs 15 J of heat. If the nail was initially at 28 °C, what is its final temperature?

Q: How many calories of heat does it take to change the temperature of 464.4 g of ice from -49.6…

A:

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…

A:

Q: Identify two forms of energy that are involved in each of the following energy conversions relating…

A: Energy can neither be created nor destroyed. They can only be converted from one form to another.

Q: 46 g of aluminum from 32 degrees celsius to 55 degrees celsius. What is the heat in cal?

A:

Q: O ΝΗ Heat ?

A: We have to draw the major product for the gives Diels-Alder reaction between furan and maleimide.

Q: conducted in a fixed volume uses the specific heat of water in calculations does not require…

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Q: 1. Classify the following as physical or chemical changes and exothermic or endothermic processes.…

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Q: Classify each process as exothermic or endothermic.(a) dry ice subliming (changing from a solid…

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Q: A college student produces about 101 kcal of heat per hour on the average. What is the rate of…

A: According to the rule of conversion of the unit, 1 cal is equal to 4.184 J So, (1×103) cal is equal…

Q: A pan containing 1000 g of water is heated from 20 C to 100 C . Calculate the number of calories…

A: The number of calories needed to heat 1000g of water from 20°C to 100°C  may be calculated by using…

Q: Classify each change as exothermic or endothermic.(a) wood burning in a fire(b) ice melting

A: The given processes has to be classified as exothermic or endothermic.

Q: When 435J of heat is added to 3.4g of olive oil at 21-degrees Celsius, the temperature increases to…

A: With the absorption of heat, the temperature of the substance changes. The greater the heat…

Q: What is the specific heat capacity of the metal?

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Q: How many grams of water at 100 c could be changed from liquid to gas if 4320 calories of heat were…

A: Here we have to use standard value of heat of vaporization of water. Using that value we can…

Q: In the laboratory a student finds that it takes 921 Joules to increase the temperature of 13.8 grams…

A:

Q: Copper wires used to transport electrical current heat up because of the resistance in the wire. If…

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Q: What misconceptions do you have about ENERGY?

A: Energy of a body is ability to do work. It includes chemical energy, kinetic energy, potential…

Q: 1. If in air at 60 a body cools from 90 to 80 in 10 minutes, find its temperature 20 minutes later.

A:

Q: Part A It takes 47.0 J to raise the temperature of an 12.0 g piece of unknown metal from 13.0°C to…

A:

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: State the difference between physical and chemical changes

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Q: Determine the mass of a sample of aluminum if losing 5,150 joules of heat causes its temperature to…

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Q: Between O*C and 30 degrees * C mercury has a specific heat of 0.138 J/g C. If 200 J of heat are…

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

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Q: The large specific heat of water limits large fluctuations in temperature near bodies of water…

A: True or False !

Q: Determine the Kinetic Energy done by a racquetball (40.0-gram) traveling at 134-mph. Convert to…

A: Solution: Given: m = 40 gram, v = 134mph Kinetic energy is a kind of energy the object have due to…

Q: A 15.6 g of gold is heated, then placed in a calorimeter. Temperature increases from 30.5°C TO 54.7…

A: Given,Mass of gold heated = 15.6 gInitial temperature of gold = 30.5 °CFinal temperature of gold =…

Q: Objects can possess energy as ________.            (a) endothermic energy          (b) potential…

A: Kinetic energy - Energy posses by an object by it's motion  Potential energy - Energy posses by an…

Q: The specific heat of aluminum is 0.900j/g*C, how many joules of energy are required to raise the…

A: Specific heat : The amount of heat is required to raise the temperature of one gram compound by one…

Q: A volume of 80.0 mL of H20 is initially at room temperature (22.00 °C). A chilled steel rod at 2.00…

A: Given : Volume of water = 80.0 mL Initial temperature of water = 22.00 oC Final temperature of water…

Q: Question 1 A 15.75 g piece of iron absorbs 1086.75 joules of heat energy and its temperature changes…

A: Specific heat of iron can be calculated as follows

Q: OH ОН OH PCC POCI3, pyridine

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Q: Energy that is associated with the position or composition of an object is called O thermal energy.…

A: An object can posses many types of energy depending on its chemical behavior, motion, position,…

Q: How much energy (in calories) is required to raise 3 000kg water from 35.00C to 91.000 C (specific…

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Q: Но. Cl- AICI3

A: Given find product of following reaction

Q: An iron can weighing 50 grams absorbs 256.0 J of heat and warms by 11.4°C. What is the specific heat…

A: The given data contains, mass =50 g which absorbs 256 J. Temperature change =11.4°C

Q: The specific heat c of marble is 858 J/g K. How much heat is needed to heat 20 g of marble from 22…

A: Heat absorbed by the water bath is given by: q = m × C × ∆T Where, q = heat absorbed m = mass of the…

Q: Determine the mass of a sample of silver if 705J of heat are required to raise its temperature from…

A:

Q: It takes 45.0 J to raise the temperature of an 10.6 g piece of unknown metal from 13.0° C to 24.9…

A: Given :-  Amount of heat absorbed = 45.0 J  Mass of piece of metal = 10.6 g  Initial temperature =…