Name 5 ways humans use fossil fuel?

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

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