How many molecules are in 15 grams of oxygen gas?
a. 2.8 x 10 23 molecules of o2
b. 2.9 x1026molecules of o2
c. 2.5 x 10-24 o2
d. 9.03 x 1024 molecules of o2

What is the number of moles in 15.0 g ash3?

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?