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Author Question: How many moles of calcium metal react to yield 0.500 mol of hydrogen gas? __Ca(s) + __H2O(l) ... (Read 20 times) |
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.