A weather balloon is filled with 15.0 L of helium gas at 25 oC and has a pressure of 685 mmHg. What is the final pressure, in mmHg, of this balloon in the upper atmosphere when the temperature drops to -35 oC and the volume becomes 34.0 L?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.