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"A chromium compound contains 28.4% sodium and 32.1% chromium by mass, while the rest is oxygen. What is the empirical formula of this compound?"
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Explain why Br2 has a higher melting point than Cl2
What is the difference between intermolecular and intramolecular bonds.
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Why is the first ionisation energy of Potassium less than Sodium?
Why do we use the n+1 rule in proton NMR?
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