The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.