Prompt How do the factors of temperature and surface area affect the rate of chemical reactions?
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Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Which best describes how johannes kepler developed his laws of planetary motion

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