An isotope of yttrium has 39 protons and 59 neutrons. what is the atomic mass of that isotope?

Why do consumers feel warmer after eating a meal

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

How many neutrons does a atom of cobalt have?