A chemist obtains a sample of sodium sulfate, Na2SO4, with a mass of 71.0 g. How many formula units of sodium sulfate are in the sample?

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

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.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution