Convert 200°F into °C

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

all eukaryotic cell have mitochondria : )

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.