An unknown radioactive element appears to have a half-life of 5.0 minutes. How much of a 2.0000 gram sample will remain undecayed after 20 minutes?

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Complete each row of the table below by filling in the missing prefix or missing exponent.