You want to clean a 500.-ml flask that has been used to store a 0.900m solution. each time the flask is emptied, 1.00 ml of solution adheres to the walls, and thus remains in the flask. for each rinse cycle, you pour 9.00 ml of solvent into the flask (to make 10.00 ml total), swirl to mix uniformly, and then empty it. what is the minimum number of such rinses necessary to reduce the residual concentration of 0.000100 m or below?
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Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)
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The boiling point of liquids is very high what does it indicate
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Chemistry, 22.06.2019 17:30
To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.
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You want to clean a 500.-ml flask that has been used to store a 0.900m solution. each time the flask...
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