How many grams are in 11.9 moles of chromium

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

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Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.