a ballon is filled with 2.5 L of helium gas at STP. how many moles of helium are contained in the balloon?

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric

C. a pottery art studio

Melting point, boiling point, and conductivity

(remember to paraphrase)1.  the water cycle in a forest produces sufficient enough rainfall to sustain the rich plant and animal life in it. in a dessert, the water cycle provides just enough water for the animals and plants that reside in it, but not near enough for the life that is in a rain forest.2. since florida is a peninsula, it is susceptible to more intense storms. thus, tornadoes can significantly damage homes and buildings. if severe enough, these storms can also  threaten lives. the residents may have to evacuate or take important measures to stay safe.