When wood is burnt, a grey powder called ash remains. The ash is stirred with water and filtered, a colourless solution is obtained.
a) What is the main component of the colourless solution? b) Explain your answer in (a) above
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Nitrogen forms many compounds in which its oxidation state varies.
a) What is meant by oxidation state? b) What is the oxidation state of nitrogen in Mg3N2
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Both diamond and graphite have giant atomic structures. Explain why diamond is hard while graphite is soft.
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When a candle was brunt completely. The total mass product was found to be greater than the original mass of the candle. Explain
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