Recent content by NicolasL

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    Calculate the thermal diffusivity from minimal information

    So I started from the heat governing equation above. There is no heat generation or matter flow, so I simplified it to dT/dt = A d^(2)T/dx^(2). Now I assume dT/dt = (278.15K-277.38K)/(1200s-900s) = 0.0025667. But then I'm stuck with the d^(2)T/dx^(2). Is the x just 0.20 m? For T I used 288.15K...
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    Exercise about meiosis and mitosis

    Homework Statement A cell with 16 chromosomes undergoes meiosis. One of the then formed cells (at the end of meiosis 2) gets fertilized by an unknown gamete. The zygote formed from this fertilization undergoes mitosis 3 times. How much DNA-strands will there be at the end, only taking into...
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    Turning glutamate into ribose-5-phosphate

    Homework Statement The question is simple: how much moles of ribose-5-P can you make from glutamate? The Attempt at a Solution I first turned glutamate into alpha ketoglutarate. I then put it in the Krebs cycle turning it into oxaloacetate. I then used the anaplerotic reactions to turn it...
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    Can Table Salt be Produced by Combining Sodium and Chlorine Gas?

    I don't know if it really fits in here, but I was wondering something the other day. Imagine you have a completely sealed small transparent room completely filled with chlorine gas, that doesn't contain a ppb of anything else. Now imagine I'm able to teleport a chunk of pure sodium in there...
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    Uncovering the Chemistry Behind Ammonia Production

    Given questions: 1) Write out the equation of the happening reaction (written out in my first thread) 2) Calculate the mass of ammonium chloride and calcium hydroxide needed to produce 6.40 L of ammonia at 20.0 °C and 1 atm. We work with an excess amount (2x) of Ca(OH)2.So with these given...
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    Uncovering the Chemistry Behind Ammonia Production

    Thanks for your answer! But i still need to determine the mass calcium hydroxide needed, and I'm quite sure it's allowed to neglect the contained water. So as calcium hydroxide is in 2x excess, does that just mean i start with twice as much Ca(OH)2 as NH4Cl or is that wrong?
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    Uncovering the Chemistry Behind Ammonia Production

    Homework Statement Hi, following Wednesday I'm going to produce ammonia in the lab at school but we have 3 questions we have to solve beforehand. The first one asks the global reaction being ammonium chloride reacting with calcium hydroxide to form ammonia, water and calcium chloride, but it...
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