An unknown element is a mixture of isotopes 120X and 122X. The average atomic mass of X is 120.37 amu. What is the percent
abundance of 122X?

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.

Based on its chemical properties, identify the position of each chemical family on the periodic table.