Is C6H1206 an element or compound

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

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral