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A 2.45 g sample of calcium completely reacts with oxygen to form 3.43 g of calcium oxide. What is the mass percent composition of calcium in calcium oxide.
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The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.
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Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
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Which factor is likely to impact the possible number of compounds ?
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A 2.45 g sample of calcium completely reacts with oxygen to form 3.43 g of calcium oxide. What is th...
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