Help Chem with give brainlsit

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions. what elemental classification does oxygen belongto? done