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Barium is in the sixth period, Calcium is in the fourth. Therefore, Barium experiences more shielding, resulting in weaker attraction of the nucleus for outermost electrons.

We need to find the value of X (the water of crystallisation) and to do this we can start by calculating the moles of water lost and the moles of the anhydrous salt (the salt product without water), we do...

                                                     Ca             NPercentage:                         81.1%       18.9%Relative atomic mass:     40.1             14Ratio:                               ...

Because the plane of the C=O bond in an aldehyde is flat, and so the nucleophilic attack of CN^- onto the C can occur above or below the plane of the molecule, producing two different stereoisom...

Firstly, we have to understand what a buffer is. A buffer is a solution which resists changes in pH when small amounts of acid or base are added. The key word here is small amounts, as if too much acid or...