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What is the optical activity of the product formed when propanone is refluxed with HCN with KCN dissolved in ethanol and why?
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Which Ion from Na+ and Mg2+ has a smaller atomic radii? Explain why?
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a sample of hydrated NiSO4 witha mass of 4.414g is heated to remove all water crystallisation. The resultant mass is 2.287g. How many H2O molecules to each NiSO4 were there in the original sample
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