ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Water in beaker on scales, image 1 of 3. The scales, also known as a top pan balance, show that the water in the beaker has a mass of 100 grams. This is part of a sequence showing that dissolved solids retain their mass. For the other images, see A350/129 and A350/130.
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