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an ice cube is placed in the sun. later there’s a puddle of water. then later on the puddle is gone. is this a physical or chemical change?
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In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius
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Is it safe to take 450mg of diphenhydramine hydrochloride?
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How many grams of sodium chloride are in 250ml of a 2.5m naci solution
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F1.5 mol of nabh4 react, how many moles of b2h6 are formed? 2 nabh4(aq) + h2so4(aq) → 2 h2(g) + na2so4(aq) + b2h6(g)
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an ice cube is placed in the sun. later there’s a puddle of water. then later on the puddle is gone....
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