The brackets used to express concentration [ ], when making equilibrium constant calculations, indicate

What is the percent by mass of magnesium sulfate in mgso4.7h2o

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.

How many moles does 80.0 h2o respresent