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A cannon ball is shot from the top of a 47.8 m high, at a speed of 53.7 m/s. How fast is it going when it reaches the plain below? How many atoms are 2.08 mol of Au? Need to find a and b such that x^4 - 8x^3 + 4x^2 + ax + b is a perfect square.? Give the value of Kp in atm for this reaction at 30 ∘C. H2O(l)⇌H2O(g)? How many worker in coal mine in pakistan?