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Given the equation for the reaction:CuO(s) + H2SO4(aq)-------> CuSO4(aq) + H2O(l) and the relative formula mass of the copper sulfate crystals Mr=249.5 and the relative atomic masses of O=16 and Cu=63....
Use the equation:Moles = Mass ÷ Relative massFor example: How many moles are there in 10g of CaCO3 ? ( to 3 significant figures)Find the relative mass of CaCO...
Valence Shell Electron Pair Repulsion Theory (VSEPR) states that lone pairs repel other lone pairs more so than they do bonded pairs. In water, the oxygen atom has two lone pairs. These two lone pairs rep...
Y3CL -> [Y3C]+ + L-(1 mark)Ligand leaves in first step. Can still show ligand as product anion but no need. Also accept any halide as leaving group.Ste...
The reactivity decreases down group 7 as the atomic radius increases, as the distance between the outer shell electrons and nucleus increases. As a result less energy is required to remove the outer elect...
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