Help Which atom/ion would be isoelectronic with Krypton (Kr)
a- Ar
B- Ca
D- Ca+2
E- As-3

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 type of reaction fuels the processes seen here?

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.