- What is the pH of a 0.176 M solution of NaOH at 298 K?

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An irretional no.between 5 and 6? Differentiate between Spectral line and slit widths? Find the range of values of k such that 2x^2+4kx-k is always positive for all real values of x. [4]? 5/4,6/6,9/6,4/3 which one is bigger? How is it we find perfectly preserved dinosaur fossils and tracks on the earth surface? How haven't they eroded?