suppose that a star has a spectrum that includes red, blue, and violet lines spaced in the pattern of the lines from hydrogen but the red line is has a wavelength of 660 nm instead of the usual 656 nm. from this evidence, you can conclude that the star is:

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Which type of reaction is shown in this energy diagram ?

Resistivity of a material is the resistance of a cm long sample of the material of 1 cm2 cross-sectional area.