The question of how many kilograms in 1 liter canseem to an uninformed person to be rather stupid. "Of course, one!" - he will answer. And make a mistake. We are accustomed to thinking that if a measure of the weight of solid (or loose) substances is measured in kilograms, then liquids are measured in liters. But it is not.
However (according to Archimedes law) the volume is directly relatedwith weight. Therefore, the question: “How many kilograms per liter?” Is not so idle. It is just necessary to take into account one more measurement parameter, namely the density of the substance, in this volume of the inserted one. The higher this figure, the more weight the substance will have. Recall the experience that we showed in the second grade at a lesson in natural history. Two empty identical cans were placed on the scales. A candle was lit under one of them. The fire heated the air, the density of which decreased. The can of cold air grew heavier.
You can link the volume and weight:if you drink daily per liter of water more than the daily norm, then after a while you can lose two kilograms of weight. This conclusion was made by scientists at the Virginia Institute of Technology, based on the research. But how to calculate how many kilograms per liter? According to a simple formula: weight equals density multiplied by volume. What does this give us in living conditions? We do not know, for example, the density of sour cream or honey. In addition, this indicator is very unstable, because it even depends on weather conditions!
Да-да, плотность вещества может меняться от temperature, humidity and atmospheric pressure. As a result, this will affect how much a kilo per liter. Recall another experience from school science: hot bodies increase in volume. Yes, by the way, and a corked bottle full of water may burst if exposed to frost. In the kitchen is good to have a special measure. She looks like a regular jug. However, on the walls of this pot there are marks indicating the level of a kilogram of granulated sugar, vegetable oil, flour and milk.
Going to the market and pricing productsGardeners, gardeners, which is usually sold in jars, we often wonder about how many kilograms per kilogram of berries. After all, here, besides the density of the “Kalinka-Malinki” itself, other factors play a role. For example, the number of gaps between berries. That is, the larger the fruit, the more air in the bank will sell you. Thus, a liter contains 600 g of raspberries or blackberries, 800 g of cherries, cherries and blueberries, 850 g of gooseberries, 550 g of cranberries and only 400 g of strawberries.
Well, how many pounds per liter of water? In 1901, the Third General Conference on Measurement Standards established that a liter of water is equal to a kilogram only if:
- distilled liquid;
- its temperature is 3.98 degrees Celsius;
- the atmospheric pressure is 760 mm Hg.
If at least one of these parameters is violated and notcoincides with others, the mass of a liter of water is less than a kilogram: at zero temperature it weighs 999 g, at 35 degrees Celsius - 994 g, at 90 degrees - 965 g
