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How long would it take a 20 g sample of Thorium-234 to decay into only 5 grams of Thorium-234? please help me):
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Which statement can best be concluded from the ideal gas law?
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Chemistry, 22.06.2019 10:00
3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?
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Chemistry, 22.06.2019 19:00
A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.
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How long would it take a 20 g sample of Thorium-234 to decay into only 5 grams of Thorium-234? pleas...
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