40. X and Y are oxides of different Period 3 elements. If three mole of Y is added to water, the solution formed is neutralised by exactly one mole of X. What could be the identities of X and Y ?+OroSO:PqOroSOs

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The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.