Chemistry, 19.10.2019 22:20, hallkayleel0lozgxtq
Why is helium in group 18 on the periodic table though it only has 2 valence electrons?
Answers: 3
Chemistry, 22.06.2019 08:30, waterborn7152
Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol
Answers: 2
Chemistry, 22.06.2019 10:50, lejeanjamespete1
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
Answers: 1
Why is helium in group 18 on the periodic table though it only has 2 valence electrons?...
Mathematics, 08.10.2019 03:10