] In Jar Test II in Example 6-3 (Textbook) the pH was held constant while the alum dose was varied. Explain why the settled turbidity varies from a high of 14 to a low of 4.5 and then rises again to 13.

Explain what happens at the saturation point when adding salt to water at room temperature.

What term describes technology that operates on an atomic level

[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