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You are given a 0.73 M solution of an unknown acid, HA. This solution has a pH of 3.42. Calculate the Ka value for this acid.? Find the vertex of the quadratic function f(x)=−4x^2+14x+6 Vertex (give as coordinate pair) rewrite in standard (vertex) form? Just exactly how does general relativity work? What is the pH of a 0.27 M HNO2 solution? Ka = 4.50 ✕ 10-4.? Qualcono mi risponda Grazie?