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- Ibuprofen, a common pain reliever, contains 75.7% C, 15.5% O, and 8.80% H by mass. What is the empirical formula
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Stage in which a typical star has completely stopped fusion
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- Ibuprofen, a common pain reliever, contains 75.7% C, 15.5% O, and 8.80% H by mass. What is the emp...
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