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A compass needle points directly to your right. which way is east ?
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Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
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Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains
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Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?
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Give one example of a pure (exact) number and of an estimated (measured) number.
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A compass needle points directly to your right. which way is east ?...
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