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How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
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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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The hormone thyroxine is secreted by the thyroid gland and has the formula: c15h17no4i4. how many m...
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