A 4.0-nm-diameter protein is in a 0.050 M KCl solution at 25° C. The protein has 9 positive and 20 negative charges. Model the protein as a sphere with a uniform surface charge density. Part A What is the electric potential of the protein at the surface? Express your answer with the appropriate units. μA ? Vsurface = Value Units Submit Request Answer Part B What is the electric potential of the protein 2.0 nm from the surface? Express your answer with the appropriate units. με V2 nm = Value Units Submit Request Answer
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