Which of the following radiation sources provides the greatest radiation dose?
one year of natural background radiation
one x-ray at the dentist
food that has been irradiated
a nuclear power plant

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.

Which best describes eras and periods?