What are the differences between weight and mass?

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The weight is the result of the action that exerts the force of gravity on a particular body. It is measured in grams (g) per gram is the weight in a vacuum of 1 cm3 of distilled water at 45 degrees latitude and 4 degrees Celsius temperature. 10 times greater than the gram is the decagram (Dg), 100 times higher Hg (Hg), 1,000 times greater is the kilogram (kg); 100,000 times greater quintal (Qm), and one and a million Sometimes metric ton (MT), equivalent to 100,000 cm3 of water at 45 ° latitude and 4 º C. The measures of weight has its equivalent in volume measurements. Thus, 1g dm3 equals 1 and 1 t, 1 m3. The weight measurements are related to specific gravity and density. The first is the relationship between the weight of a substance to its volume, and is calculated as the ratio between the weight and volume. In contrast, the density equal to the ratio between the mass and volume and is calculated as the ratio between the two concepts. The mass is defined as the amount of matter that forms a body and not to be confused with weight, since the mass is constant and the weight is related to the force of gravity. But generally speaking when you actually weight refers to mass and the mass value is expressed in kilograms.

What are the densities of certain substances?

While oil, alcohol, gasoline and oil have a lower density, platinum has a density of 21, 50, the gold, 19, and mercury, 13.60.

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