Cold water of the same source forms lather hardly with soap. Why?
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Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path

Which statement best describes how chemical equations demonstrate conservation of mass?

All of the following occurred due to the invention of the railroad except