Which of the following observations is the best indicator that a new substance has been formed? A. A solid has become a liquid.
B. A substance has changed color.
C. A solid has dissolved in a liquid.
D. The volume of a substance increased.

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

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?

Adilute aqueous potassium nitrate solution is