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Chemistry, 22.06.2019 21:30
Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.
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When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two
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Which of these natural resources is non-renewable a.corn b.wind c.geothermal d.natural gas
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The student repeated the experiment using a higher concentration of acid. the same volume of acid and the same mass of magnesium ribbon were used. what volume of hydrogen gas would have been produced after 60 seconds?
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How much heat is released when 12.5 grams of oxygen is frozen, with work pls!...
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