Recent content by khoivu

  1. K

    Does integrated rate law have stoichiometric coefficient?

    I understand. A constant is constant, no matter how we says it k or k'. But if the question asks to find a value of rate constant based on integrated rate law, then it would be important to know what kind of equation we should use, the one that has stoichiometric coefficient or the one that does...
  2. K

    Does integrated rate law have stoichiometric coefficient?

    So anytime I've seen textbooks explain integrated rate laws, they usually start with a reaction of the form A -> B and then from there say, if we know the reaction is first order with respect to [A] then: v = -d[A]/dt = k[A] And then subsequently integrate this to find ln[A]/[A]i = -kt...
  3. K

    Buoyancy force on the partially submerged object

    Archimedes's principle says that the buoyancy force would be equal to the weight of the fluid displaced by the body. It's easy to work with the completely submerged object since I just need the whole volume of the object to as it is equal to the volume of displaced fluid. However, if an object...
  4. K

    Can an object travelling in a straight line have angular momentum?

    I have seen solutions of many problems in which an object going in straight line has angular momentum, especially those use conservation of angular momentum. For example, a person throws a ball at a rod that is hung vertically at one end. The solution says that at the moment before the ball hits...
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