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: If 150 grams of water is heated from 20°C to 30°C , what is the number of joules of heat energy…

A: Specific heat ( s ) :-  The amount of heat required to raise the temperature of one gram of a…

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

A:

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

A:

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: In the laboratory a student finds that it takes 49.2 Joules to increase the temperature of 14.8…

A:

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: describe THE NATURE OF ENERGY

A: Energy is the capacity to do some work. It is the ability to cause change.Energy comes in different…

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

A:

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: If 2500 cal of heat are absorbed by 150 grams of water that is initially at 23°C, what is the…

A: Given, mass of water = 150 g  Initial Temperature , Ti = 23°C  Tf = ?  Heat absorbed = 2500 Cal

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: Ethanol and gold each absorb the same amount of heat energy at room temperature. If ethanol has a…

A: As we know, amount of heat added is expressed as Q= mc ∆t Where Q=Amount of Head Added c =Specific…

Q: 24. In the specific heat equation, what unit must temperature be? Fahrenheit Kelvin Joules Celsius

A: We know , Specific heat equation is ; q = m × C × ∆T  q = heat Absorbed or released m = mass of…

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

A:

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

A: Law of conservation of energy;   Energy can be neither be created nor destroyed but it can be…

Q: Which of the following is an example of a kinetic energy change?   a Temperature change  b Phase…

A: Kinetic energy is the measure of movement of molecules.

Q: A) Différèntiáté bétween heat and energy with examples. ir

A:

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: 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: List some examples of kinetic energy.

A: Kinetic energy could be defined as the energy that is found in objects that are moving. The energy…

Q: How many joules of heat energy is required in rising the temperature of 90.1g of water from 29.1 c…

A: It is given that 90.1 g of water is heated and the temperature rises from 29.1°C to a temperature of…

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: In the laboratory a student finds that it takes 21.6 Joules to increase the temperature of 13.4…

A:

Q: Give at least one physical changes that are obviously accompanied by energy change.

A: The physical changes are the changes in which a substance does not change the identity of the…

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…