A6.0 l sample of nitrogen gas contains 0.50 mole of a gas. if enough gas is added to make a total of 0.75 moles at the same pressure and temperature, what is the resulting total volume of the gas?

2.3 l
4.8 l
7.5 l
9.0 l

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

How have the greenhouse gasses increased from the year 2000 to 2018

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.