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Which statement justifies that phosphine (ph3) is a polar molecule?
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State the formula for density in words and mathematical symbols
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Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?
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What is the molarity of 50gram of calcium carbonate is dissolved in 250ML of water​...
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