The wash liquor from a paper mill contains 2% (by weight) of solids is cocentrated in an evaporator to yield a, product with 20% (by weight) of aolids. The quantity of water evaporated per 100 kg of feed is
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Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector.
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