Describe the makeup of earth’s atmosphere. how do solids get into the air?

On a distance vs time graph the line of an object at rest is a

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

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.