Which gas sample contains a total of 3.0 x 10 23 molecules? A) 2.0 g of H2
B) 38 g of F2
C) 14 g of N2
D) 71 g of Cl2

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

How much energy is made when a pice of wood burns. how do you know