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Chemical Energy Chemical Engineering Energy Physical Science The Body
Chemistry Unit 7 Test Questions – Flashcards 35 terms
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Elizabeth Mcdonald
35 terms
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Rae Jordan
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Energy Equilibrium Reactions
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Sam Arent
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Chemistry III – Flashcards 68 terms
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Kevin Stewart
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AP Chemistry Energy
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Charlotte Small
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Maddison Bailey
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Energy Particle Physics
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Linda Lynch
115 terms
A certain reaction has an enthalpy of -75kJ and an Ea of 40kJ. A catalyst lowers the activation energy of the forward reaction by 15kJ. What is the Ea of the reverse reaction with the same catalyst?
Ea=40kJCatalyst(-15)= 25kJReverse reaction(+75)=100kJ
More test answers on https://studyhippo.com/kinetics-blahh-8705/
the label on a cereal box indicates that one serving (with skim milk) provides 250Cal. what is this energy in kJ?
250Cal X (1000cal/1Cal) X (4.184J/1cal) X (1kJ/1000J) = 1.0 X 103kJ
More test answers on https://studyhippo.com/chapter-5-notes-7867/
The potential energy is almost always a function of coordinates. What is the V expression?
V = V(x) for 1D For 3D V = V(x,y,z)
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What is the difference between an energy calorie and a dietary calorie?
A dietary calorie is equal to 1,000 energy calories.
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What is the effect of a catalyst on the required energy to achieve effective collisions?
Catalyst lowers the energy needed for an effective collision. (Activation energy)
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What is the fate of the energy in visible light that is incident upon glass
Visible light will be transmitted by the glass, losing little energy, so energy remains visible light energy
More test answers on https://studyhippo.com/physics-chapter-26-33533/
What is the reason we can only have a certain number of electrons in an energy level?
The repulsion between negative electrons.
More test answers on https://studyhippo.com/chapter-2-11845/
What is the relationship between wavelength of light and the quantity of energy per photon?
They are inversely related
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What is the trend in the U.S. of energy consumption between the mid-70s and the mid-90s?
We kept using more and more, even after the peak of the discovery
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