Sodium vapor lamps are often used as street lights. They give off a yellow light having a frequency of 5.09x 1014 Hz. What is the wavelength of this light in nm (nanometers)?

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

List four observations that indicate that a chemical reaction may be taking place