what does work up mean in chemistry?
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In chemistry, work-up refers to the series of manipulations required to isolate and purify the product(s) of a chemical reaction. Typically, these manipulations may include: quenching a reaction to deactivate any unreacted reagents.
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When work is negative, then it means that work is done by the system because when the system does work, it loses energy and the volume increases. If work is positive, then the work is being done on the system because the system is absorbing energy and the volume decreases.
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Work-Energy Theorem: The work done on an object is equal to it's change in kinetic energy. Kinetic Energy: Kinetic Energy is the energy of motion.
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Both work and heat are energy changes that happen during the process and when taken together, they compensate for each other so that the change in both, combined (q + w), does not depend on path. This function is called the change in internal energy, .
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Sexed up refers to making something more sexually attractive. Since 2003 it has been used in the sense of making something more attractive than it really is by selective presentation; a modern update to the phrase "hyped up". One variant of "sexed up" is "sex it up".
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What is an employee write up at work? A write up at work, or an employee write up, is a formal document that must be discussed with and signed by an employee after they have broken important business protocols. This is known as a “written warning” to some. These documents are rarely written after a single incident.
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DO IT UP BROWN - "Do something well; do it to one's satisfaction. In England the phrase has had the meaning of deceive or take in. Either way, it carries the implication of doing something thoroughly and probably comes from the roasting of meat, yielding a brown color that is the result of thorough cooking.
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hard up. 1. slang Having little to no money. ... slang Lonely and thus apt to accept questionable friends or lovers. You must be hard up for friends if you're spending time with those losers.
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The physics definition of "work" is: ... Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work.
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Workout is a noun that means an exercise session, or an adjective that describes such a session. Work out is a verb phrase when separated into individual words, and it means to exercise, to find a solution, or to be ok.
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Definition of come up to. 1 : to move near to (someone or something) : to approach (someone or something) He came up to me and introduced himself. 2 : to be as good as (something) The movie didn't come up to our expectations.
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Dr. Laskowski: A step-up is a simple body resistance exercise that works muscles in the legs and buttocks. A step-up targets the quadriceps, here, and hamstrings, here, as well as the gluteal muscles in the buttocks. This is a good general lower body conditioning exercise.
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in conjunction with the word up, as in team up, used as a verb to describe two or more people coming together to compete at a game or sport or to work on a project. Related terms are teams up, teamed up, teaming up. Teem is a verb that means to be abundant, to be inundated with a prolific amount.
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Work study. Work study is a combination of two groups of techniques, method study and work measurement, which are used to examine people's work and indicate the factors which affect efficiency.
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Work done on the system means something outside the system did something (other than heat flow into the system) to increase the internal energy of the system. Work done by the system means the system's internal energy decreased as it did work on something outside the system.
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In physics, work is the product of force and displacement. A force is said to do positive work if (when applied) the force has a component in the direction of the displacement of the point of application.
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Definition of call up (Entry 2 of 2) transitive verb. 1 : to summon together (as for a united effort) call up all his forces for the attack. 2 : to bring to mind : evoke. 3 : to summon before an authority.