- 1). Pour the water resulting from the melted ice into the graduated cylinder or beaker. Alternatively, you can put the ice into the graduated container before it melts. It's best to use a container with very fine graduation marks (for example, a mark showing every milliliter of volume), since this will give the most precise result.
- 2). Read the volume of water in the container by comparing the water level to the graduation marks on the side of the container. The top layer of water in a container will take on a slight downwards curve known as a meniscus. Read the volume of the water from the lowest point of this meniscus.
- 3). Multiply the volume reading you obtained by 0.998. This is the density of water in grams per milliliter at 20 degrees Celsius, which is about room temperature. The result will be the mass of the water in grams. This will also be the mass of the ice that originally melted to produce that water.
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