Which is not an observation?
a. the mouse is eating.
b. the mouse is hungry.
c. the mouse has grown 2 cm.
d. the mouse has consumed 15 ml of water.

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

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?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)