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Assume that the resolution of an electron microscope can be described through th

ID: 488264 • Letter: A

Question

Assume that the resolution of an electron microscope can be described through the dc Broglie wavelength. What is the maximum resolution of electron microscopy? 2.4 pm 7.9 pm 21pm 55 pm A typical Escherichia coli bacterium has an intracellular protein concentration of 240 mg/mL, and a volume of 0.6 mu m^3. Calculate the total protein mass in such a bacterium. 0.144 pg 1.44 pg 14.4 pg 144 pg Be_2Se_3 is under scientific study today as a semiconductor for electronics applications Given the following options, classify the B-Se bond. nonpolar covalent polar covalent ionic charge-shift

Explanation / Answer

Ans. 8

Maximum resolution for electron microscopy is 2.4 pm

Ans. 9

Elecronegativity of Boron is 2.04

Electronegativity of Se is 2.55

Difference of eectronegativity is 0.51

so this is non polar covalent

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