Which of the following best describe gas particles? SELECT ALL THAT APPLY
A.) moving randomly
B.) collide with each other
C.) move slow
D.) High kinetic energy
E.) moving orderly

A, B and D

Explanation:

Gas particles move randmly at high speed, colliding with each other

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer