What's the molar mass of alumina, Al2O3? The atomic weight of aluminum is 26.98 and the atomic weight of oxygen is 16.00.
A) 101.96 g/mol
B) 149.96 g/mol
C) 42.98 g/mol
D) 48.00 g/mol

What is the mass of sodium in 3 moles of sodium chloride

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

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.