Determine the molecular weight for mg(no3)2. 134.32 g 118.32 g 148.33 g 172.64 g

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]