Rhodium-105 has a half-life of 105 years. How much of a 100 gram sample would remain after 420 years?

Review the branily terms and services guides well u know what i never did so go have a nice ice cream sunday

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m