Which one has a greatest mass, one atom of carbon, one atom of hydrogen, or one atom of litium

What happens to energy in an open system?

Write the overall equation for the reaction for lithium battery

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