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The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?
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An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
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Is Acetone has a density of 0.79 g/ML a physical or chemical property...
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