A galaxy that has an undefined shape is best classified as a(n)
galaxy.

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

How have the greenhouse gasses increased from the year 2000 to 2018

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