What is an electrochemical cell?
a. two electrodes separated by an electrolyte that can generate an electrical current.
b. a chemical that, when an electrical current is passed through it, releases a large amount of energy.
c. a biological cell, such as a bacterium, that can generate an electrical current.
d. an electrical circuit formed from chemicals in a solid state rather than metals or metalloids.

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color

Fred is studying a substance that is made out of only one element. this means that