6.5 grams of zinc reacted with
hydrochloric acid.
Calculate how many
grams of hydrogen
were released.

There are main groups in the modern periodic table of elements

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.

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.