Chlorofluorocarbons rise to the stratosphere and Multiple Choice interact with UV energy to produce free radicals that react with oxygen to create ozone. interact with UV energy to produce free radicals that destroy ozone. react directly with stratospheric ozone to destroy it. react with free radicals to remove carbon dioxide.

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.