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Why does heat get absorbed by the engine must be discharged??
The reason why heat is absorbed by the engine must be discharged to the atmosphere in one way or another because the engine will become overheated and eventually seize up and this is why a cooling system is built into the engine to cool it and prevent overheating.
This is answered by J.G.N
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How much heat must be absorbed by 50 grams?
Joule (J) is a unit of energy.Gram (g) is a unit for mass.
The heat of fusion for water is the amount of energy that must be absorbed for water to what?
Melt.
In calculating the heat given off by a reaction in a calorimeter you must account for heat absorbed by?
In calculating the heat given off by a reaction in a calorimeter, you must account for heat absorbed by the surroundings, including the calorimeter itself, any water or solution in the calorimeter, and the air around the calorimeter that may be affected by the reaction. This ensures an accurate measurement of the heat released or absorbed by the reaction itself.
Name one quantity that must be know in order to determine the amount of heat associated with a body?
There are three: Energy absorbed by a body is directly proportional to the rise in temperature of a body Heat energy absorbed by a body is directly proportional to the mass of the body Heat energy absorbed by a body depends upon its nature and is commonly called specific heat capacity.
How do you know if the heat is absorbed or released?
Boiling does require the liquid to be absorbing heat--large amounts at the point of transition from liquid to gas. Obviously, in the real world, some of this heat is being released simultaneously, but more must be absorbed than is released for boiling to continue.
How much heat is absorbed if 2.60mol of A reacts if heat of formation in -237kJmol?
You must first convert kJ/mol. So.. -237kJ x (1kJ / 2.60mol) = -91.15kJ You then must take this and multiple by (-1), since you cannot have a negative heat. (-91.15kJ x -1) = 91.15kJ
What must occur to the heat energy of an object in order of a phase change of the state of matter?
During a phase change, the heat energy of an object must either be absorbed or released to allow the particles to overcome intermolecular forces and rearrange into a new phase. For example, during melting, heat energy is absorbed to break the intermolecular bonds holding the solid together and transition it into a liquid.
How many moles of NH4NO3(s) must be dissolved in water so that 73.0 kJ of heat is absorbed from the water?
To determine how many moles of NH4NO3(s) must be dissolved to absorb 73.0 kJ of heat, you need to know the heat of solution (enthalpy change) for NH4NO3. The dissolution of NH4NO3 is typically endothermic, with a heat of solution of about +25.7 kJ/mol. By dividing the total heat absorbed (73.0 kJ) by the heat of solution (25.7 kJ/mol), you find that approximately 2.85 moles of NH4NO3 must be dissolved to absorb that amount of heat.
What effect if any does this energy transfer have on the overall efficiency of the car engine?
As a "heat engine", a car engine must rid itself of heat to continue. Efficiency of the heat engine depends on the difference in temperature; therefore, as the temperature outside reaches the temperature inside, the engine stops.
How much heat is absorbed if 2.60mol of A reacts if heat of formation in 237kJmol?
You must first convert kJ/mol. So.. -237kJ x (1kJ / 2.60mol) = -91.15kJ You then must take this and multiple by (-1), since you cannot have a negative heat. (-91.15kJ x -1) = 91.15kJ
Why must food be absorbed?
Food must be absorbed so the body can get all the nutrients from the food.
Why must every heat engine have a cold reservoir in order to operate efficiently?
Every heat engine needs a cold reservoir to operate efficiently because it allows for the transfer of heat from the engine to the reservoir, which helps maintain a temperature difference necessary for the engine to work effectively.
