1/2 ()" The eigenstates of the particle-in-a-box are written, ηπχ. sin If L = 10.0, what is the expectation value for in the n = 4 eigenstate? Report your answer as a multiple of h2. (Note: = -ih /dx)

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Plz answer correctly in 20 minutes plz it's very urgent

One of the most important applications of ion exchange is the separation of large molecules from small molecules? 1- true 2- Error

Answer question number 7 on the attached document

I'm unsure of how to put it into the calculator? I read that it was ln instead of log. Do i type it all in together and then hit enter?

Home Insert Draw View A Text Mode Lasso Select Insert Space + 4. When measuring the volume of a liquid, how would sample size (e.g., using a 10 mL graduated cylinder vs. a 100 mL graduated cylinder to measure out 70 mL of a liquid) affect the absolute error and percentage error in the measured values of mass and volume and therefore the density?