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Explain with examples following characteristics of chemical reactions: a. Change of colour b. Evolution of gas c. Change of smell d. Change of state
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Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?
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What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?
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Explain with examples following characteristics of chemical reactions: a. Change of colour b. Evolut...
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