Suppose in a dying star, a reaction takes place under extreme pressure and temperature. This reaction is hypothetically as follows:
a.
The reaction is endoergic because of the mass energies associated with the products and reactants. The reaction takes in energy on the entrance channel of the equation to produce the exit channel. This reaction shows that after iron, the binding energy per nucleon decreases, meaning that any reaction fusing an element more massive than iron will perform an endoergic reaction.
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Four of the five answers listed below are names of kingdoms. Select the exception
a. Animalia b. Protista c. Eukarya d. Fungi e. Plantae
First Law of Thermodynamics: The work done on an ideal gas system in an isothermal process is -400 J. What is the change in internal (thermal) energy of the gas?
A. 0 J B. -400 J C. 400 J D. 200 J
Gamma rays are photons with very high energy. How many visible-light photons with a wavelength of 500 nm would you need to match the energy of a gamma-ray photon with energy 4.1 × 10-13 J? (h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s)
A) 1.0 × 106 B) 1.4 × 108 C) 6.2 × 109 D) 3.9 × 103
Why is Polaris not always the pole star, and when does it get another chance?
What will be an ideal response?