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Chemistry

  • Is there a calculator on the web where I can measure explosions?

    I'm trying to figure out how much Hg (Mercury) is needed to explode a certain range of area. But I can't find a website that can do that, let alone with mercury. I know the weight needed, just don't know how big the explosion will be.
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  • Is paint flammable?

    Best answer: Some paint can be. They have to be VERY careful in paint plants when they work with the paints employing flammable solvents. Ground all the mixers and vats, have high ventilation, etc. Even the waste barrels (drums) need grounding when adding or removing the liquids. Sparks mean fire or explosion. Not good.

    Not latex paints (not water-based paints), but oil (solvent) -based paints. If you need thinner to clean instead of water, it is probably a flammable paint. Mineral spirits (paint thinner) is a flammable substance. There are variations to composition, but the volatile components are generally highly flammable.

    Flammable paints smell of the volatile organic compounds that are used as the carrier. They do not smell the same as non-flammable paints based on water.
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  • Why must the absolute temperature (K) be used in all gas law equations?

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  • Help with chemistry!!?

    A 28.8g piece of dry ice (solid carbon dioxide) is allowed to sublime (convert directly from a solid to a gas) into a large balloon. Assuming that all of the carbon dioxide ends up in the ballroom, what will the volume of the balloon be at a temp of 22oC and a pressure of 742mmHg
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  • Which is not a sign of chemical change?

    1. Precipitates forming when 2 solutions are mixed 2. Snow subliming to vapor 3. Bananas turning brown 4. First aid kit coldpacks turning cold when the substances inside mix
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  • What happens if you drink paint then drink paint remover?

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  • What can cause a burning like plastic smell in a bedroom?

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  • GCSE chemistry exam help?

    nitrogen reacts with hydrogen to make ammonia, N2 +3H2 -->2NH3 calculate the theotretical yeld of ammonia, NH3, that can be made by reacting 90 tonnes of hydrogen with an excess of nitrogen
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  • What does this question mean by "an atom of which element"?

    I was going to put the element symbol but then I read the question again and it says this (there's actually two questions with the same wording almost) 1. An atom of which element has a half-filled 3p subshell? 2. An atom of which element has a completely full second shell of electrons?
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  • Why does smell stick to your clothes?

    Best answer: Smell isn't physical, but the MOLECULES THAT CAUSE SMELL ARE.
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  • Will we die from dry ice fumes?

    So today I bought ice cream from this place and they pack it in dry ice in a freezer bag. So anyways it was in my car and I didn’t crack the windows like it says beacuse I didn’t notice till way after my car has very bad seals anyways like you can air like a window is down. So I also left the bag by the door of my apartment building not thinking with the dry ice in it. It’s been about 4 hours of this ice sitting in my kitchen/living room which has no windows just air vents. I just moved the ice to outside my apartment building and opened my bedroom window is that enough ? I feel fine so do my roommates but now I’m worried we will die ?
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  • How many MOLES of oxygen are present in 4.46×10^22 molecules of sulfur trioxide ?

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  • Why does a tin/can go rusty if it is in the cupboard?

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  • If each water molecule has 1 oxygen atom, then why can't we breath in the water?

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  • Why isn t zinc soluble in water?

    Best answer: Why doesn't zinc react with water? .... is that your question?

    The alkali metals react vigorously with water. The alkaline earth metals react with water, but much more slowly. Aluminum reacts with water in a basic solution. So what about zinc?

    Thermodynamically, any of the metals above hydrogen in the activity series should react with water. But there's a catch. While zinc reacts with water (assuming the passivating layer of ZnO is removed from the surface), the reaction is so slow as to be unnoticeable. There is a difference in a reaction occurring, and occurring fast enough to be observed. So how can we speed up the reaction? Since zinc is a solid and water is a liquid, you can't change the concentrations, but you can increase the temperature and increase the surface area, both of which should speed up the reaction. But even with boiling water and fine zinc powder the reaction is abysmally slow. The next step is to raise the temperature some more. Zinc metal will react noticeably with high pressure, really hot steam.

    Zn(s) + H2O(g) --> ZnO(s) + H2(g)
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  • An element that contains an electron in a d sublevel is?

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  • What would the world be like without the compounds aspirin and penicillin ?

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  • Why do elements have consecutive number of protons?

    Isn't it strange that the universe has elements that have their number of protons arranged in an EXACT consecutive manner? Shouldn't it be like, 2 protons for hydrogen then 5 protons for helium, 10 protons for lithium, 11 points for berryllium? I mean why does sub-atomic particles have the exact same consecitive numbers? How and why does this happen?
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  • Chemistry help please and thank you?

    In the formation of an ionic compound a metal atom _____ electrons, while a ________ atom gains electrons. In the process, the metal atom acquires a ______ charge, while the nonmetal atom acquires a _____ charge. This process takes place because both atoms tend to acquire ___ electrons in their valence shell for them to resemble the electron configurations of the ____.
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  • Write the chemical formula:e. Aluminum nitride?

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