Your friend just recovered from a painful bacterial ear infection. Her first day back at school, she says, "Scientists should just figure out how to eliminate all the bacteria in the world so that no one gets sick!" What is wrong with this statement? What
would happen if there were no bacteria on earth?

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Why is it incorrect to balance a chemical equation by changing the subscripts? explain.

Calculate the number of grams of sodium in 3.00 g of each sodium-containing food additive.