Which scientific law is also known as the law of inertia?
1. law of universal gravitation
2. law of conservation of mass
3. newton's first law of motion
4. newton's second law of motion

In salt water solution, the salt is the blank

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave