What was formed when the Pacific and North American plates converged? Mount St. Helens
the Hawaiian islands
The Mid-Atlantic Ridge
the San Andreas fault

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

What are the chemical names of these compounds? ke: mg3n2: reset next

Draw the lewis structure for the trisulfur s3 molecule. be sure to include all resonance structures that satisfy the octet rule.