•The biosphere is the parts of Earth and the surrounding atmosphere where there is life.•The biosphere is the parts of Earth and the surrounding atmosphere where there is life. true or false

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?