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How much energy must be transfered by heat to the engines surroundings if 2.5 kj is transfered by heat to the engine with 8.5 percent efficciency?
There are two possible answers to this question - depending on how you read it: If 2.5 kJ is converted to work but that only represents 8.5% efficiency, then the heat transferred to the surroundings will be 2.5(1-0.85)/0.85 = 26.9 kJ On the other hand, if 2.5 kJ is the total energy coming in and only 8.5% of it is converted to work, then the other 91.5% is lost to the surroundings: 2.5(1-0.085) = 2.2875 kJ
A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10 2 kJ of work on the system What is the change in internal energy of the system?
3.0 x10 1 kj A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10³ kJ of work on the system. What is the change in internal energy of the system? --- 224 kj
Kj is used to measure what kind of energy?
Kj (kilojoules) is typically used to measure energy in the form of heat or work. It is commonly used in the field of physics and engineering to quantify energy transfer or output in various processes and systems.
How much energy is required to vaporize 1.5 kg of copper?
1650kj
What type has energy in it that is measured in kj?
Chemical energy typically stored in the bonds of molecules is measured in kilojoules (kJ). Examples of chemical energy sources include food, gasoline, and batteries.
How do you calculate activity level?
how much Energy is kJ is needed for one hour of jogging
How do you calculate Physical activity level?
how much Energy is kJ is needed for one hour of jogging
Is energy kj a nutrience?
kj (kilojoule) is simply a unit to measure energy.
What does kJ measure?
Energy.
In a chemical reaction the reactants contain 385 kJ of chemical energy and the products contain 366 kJ of chemical energy?
In this chemical reaction, the reactants have 385 kJ of chemical energy, while the products have only 366 kJ. This indicates that the reaction is exothermic, as it releases energy in the form of heat, resulting in a net loss of 19 kJ of energy. The difference represents the energy released to the surroundings during the reaction.
Why do you use kilojoules?
We use kJ, MJ, or GJ, because the Joule is a fairly small unit. For example, a 40-Watt light bulb, giving light during one hour, would use 40 x 3600 = 144,000 Joules, or 144 kJ, or 0.144 MJ. This is not a huge amount of energy!We use kJ, MJ, or GJ, because the Joule is a fairly small unit. For example, a 40-Watt light bulb, giving light during one hour, would use 40 x 3600 = 144,000 Joules, or 144 kJ, or 0.144 MJ. This is not a huge amount of energy!We use kJ, MJ, or GJ, because the Joule is a fairly small unit. For example, a 40-Watt light bulb, giving light during one hour, would use 40 x 3600 = 144,000 Joules, or 144 kJ, or 0.144 MJ. This is not a huge amount of energy!We use kJ, MJ, or GJ, because the Joule is a fairly small unit. For example, a 40-Watt light bulb, giving light during one hour, would use 40 x 3600 = 144,000 Joules, or 144 kJ, or 0.144 MJ. This is not a huge amount of energy!
How much energy must be transfered by heat to the engines surroundings if 2.5 kj is transfered by heat to the engine with 8.5 percent efficciency?
There are two possible answers to this question - depending on how you read it: If 2.5 kJ is converted to work but that only represents 8.5% efficiency, then the heat transferred to the surroundings will be 2.5(1-0.85)/0.85 = 26.9 kJ On the other hand, if 2.5 kJ is the total energy coming in and only 8.5% of it is converted to work, then the other 91.5% is lost to the surroundings: 2.5(1-0.085) = 2.2875 kJ
In chemistry what does KJ mean?
That is an abbreviation for a kilojoules, a metric measure of energy.
A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10 2 kJ of work on the system What is the change in internal energy of the system?
3.0 x10 1 kj A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10³ kJ of work on the system. What is the change in internal energy of the system? --- 224 kj
What is the lattice energy for potassium bromide?
The lattice energy for KCl is 715 kJ mol-1.
For the chemical reaction H2 CO2--H20 Co the energy contained in the reactants is 352 kj and the energy contained in the products is 394 kj assuming 1 mol of each substance is present is this true?
No, this is not true. The energy contained in the reactants is 352 kJ, and the energy contained in the products is 394 kJ, suggesting that energy was released during the reaction. However, energy should be conserved in a chemical reaction, so the total energy in the products should be equal to the total energy in the reactants.
How much energy is needed to melt 2 kg of aluminum?
800kj-----------Apex<('-'<)
