Determine the formula of the hydrate
Gypsum is hydrated calcium sulfate. a 4.89 g sample of this hydrate was heated, and after the water was driven off, 3.87g anhydrous calcium sulfate remained. Determine the formula of this hydrate and name the compound.
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The teacher randomly finds a test with a good grade on it. Find the probability that the student did not study for the test. Round to three decimals.
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The speed limit on a particular stretch of road is 30 miles per hour. Express this speed limit in millifurlongs per microfortnight. A furlong is 1/8 mile, and a fortnight is a period of 2 weeks. (A microfortnight is in fact used as a unit in a par
A researcher is evaluating the effectiveness of a speed-reading course. A standardized test, measuring both speed and comprehension, was giben to a sample of n=15 students before the course started and again at the end of the course.
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