What is the rate of forward and reverse reactions

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a.soft fossils b.mold fossils c.index fossils d.trace fossils

How many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride