• What are some differences between observational studies and experiments?

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    What are some differences between observational studies and experiments and what are issues that may arise during data collection or interpretation?
    32 mins ago
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  • Free Csgo aimbot for Mac??

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    7 hours ago
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  • Chem Help?

    Your Answer: 
    If 20.0g of HBrO3 is reacted with excess HBr. HBrO3 (aq) + 5HBr (aq) → 3H20 (l) + 3Br2 (aq) a) What is the theoretical yield of Br2 for this reaction? b) If 47.3g of Br2 is produced, what is the percentage yield of Br2?
    8 hours ago
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  • What happens if you compress heat?

    Your Answer: 
    I realize it might sound pretty stupid, but I'm curious as to what would happen if you were to take a lot of heat energy and simply compress it. Would there be combustion at some point or...? Or could a fire burn on only molecules found in air (aka, without wood or a similar fuel source), like, if you could pull a firebender and make fire appear... show more
    10 hours ago
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  • Thhbnnmbbjkkknbbb?

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    11 hours ago
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  • In NaCl crystal consists of?

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    11 hours ago
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  • In NaCl crystal consists of?

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    11 hours ago
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  • What is T in the Arrhenius equation?

    Your Answer: 
    I did a reaction of copper sulfate and zinc. Is T in the Arrhenius equation the temperature of the solution or the temperature of the surroundings?
    12 hours ago
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  • Out of vegetable oil can I use margarine?

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    14 hours ago
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  • How to get Nembutal or Seconal from a reliable source?

    Your Answer: 
    I need to order these drugs to resolve an issue, that I have. Thanks
    18 hours ago
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  • Is a cup of pure iced water homogeneous or heterogeneous?

    Your Answer: 
    I asked my chemistry professor if a cup of pure iced water would be homogeneous or heterogeneous, and she said that when you look at it, it's heterogeneous because the liquid and solid can be separated, as there are two phases of matter. She then said that it's also heterogeneous because it's the same substance equally distributed... show more
    18 hours ago
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  • Flue gas Steam boiler help please 10 points?

    Your Answer: 
    A fuel consists of carbon and hydrogen only. When completely burned in air the flue gas on a dry basis has the following analysis: (percent) CO2 12 O2 N2 83 The temperature of the flue gases produced is 1600°C and these are fed to a boiler used to raise steam. 15 percent of the heat available at 1600°C is lost to the surroundings and the flue... show more
    22 hours ago
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