What mass of crystals will form when a hot saturated copper sulphate solution made by dissolving 60 g of copper sulphate crystals in 100 cm3 of water at 60 degree Celsius is cooled to 25 degree Celsius?
The tangents to a parabola with focus (1,2) are x+y=0 and x-y=o. Find the length of latus rectum.
5th Grade Math
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