Midpoint of the bottom side of the square
Four 1.8 kg masses are located at the corners of a square 0.20 m on each side. Find the magnitude and direction of the gravitational force on a fifth 1.8 kg mass placed at the midpoint of the bottom side of the square.
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Draw the structure of histidine in each ionization state. What is the net charge of the histidine molecule in each ionization state?
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Consider a general polyprotic acid system with equilibria between species H2A+, HA, and A-. Rather than starting with the diprotic form of the acid (as in Problem 1), suppose that you made a solution by adding the monoprotic form HA to water.
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An unknown salt is either NaF, NaCl or NaOCl.When 0.050 mol of the salt is dissolved in water for form 0.500 L of solution, the pH of the solution is 8.08. What is the identity of the salt?
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Logic can do a great deal in helping us understand our arguments. Explain what advantages we obtain by studying logic in terms of improving our reasoning
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