How many grams of NaOH are required to prepare 200 mL of a 0.450 M solution? (molar mass of
Na...
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Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g. what is the percent by mass of water in the hydrate? %
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Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions
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