Salt solution on scales

Credit: ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Salt solution on scales, image 3 of 3. The scales, also known as a top pan balance, show that the salt solution in the beaker has a mass of 105 grams. This is to be expected as 5 grams of salt was dissolved into 100 grams of water. This is part of a sequence showing that dissolved solids retain their mass. For the other images, see A350/128 and A350/129.

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