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The density of water is large, generally gram cubic centimeters.
The density of air is about grams of cubic centimeters (regardless of compressed air).
The higher the density and the greater the mass, then the water must be under the air, but the air is fluid, so it is not necessarily under the water.
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The density of water is 1 to 10 cubic meters per cubic meter.
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The density is smaller than air. Nitrogen has a molecular weight of 28, while air has an average molecular weight of 29.
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The density of water is 1000 kilograms3 and the density of air is kilogram cubic meters.
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You should take out the book and look at the density of water and air.
The unanimous conclusion of the scientists should not be wrong.
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Watery. Otherwise, there would be no rain on the earth. Got it?
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Water is denser than air, but water vapor is not necessarily.
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Not necessarily, the density of air is not a certain quantity, and there must be certain conditions for the two to be comparable.
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The water of the water is large, so the water is underneath but the water vapor is not considered.
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Yes! Liquid water is much denser than air, so water is just below the air! Water is denser than oil, so water is underneath oil.
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Water, of course, absolutely.
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The water is big so the water is below but the water vapor is not considered.
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Of course, who is denser.
So the flood air is below.
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The density of the air in the canopy: Under standard conditions, the air density is about kilograms per cubic meter.
The density of pure water: 1000 kilograms per cubic meter, this conclusion was measured at 4 o'clock, which is also the time when the water density is at its highest.
Therefore, the density of water is higher than that of air.
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The density of air and the density of water, the density of water is greater.
The density of water at 4 is 10 3 kg m 3 or 1 g cm 3 (
Air density refers to the dust grip at 0 degrees Celsius, the absolute standard index, the density is, normally, that is, 20 degrees Celsius, taken.
Air refers to the mixture of gases in the earth's atmosphere, so air belongs to the mixture, which is mainly composed of nitrogen, oxygen, noble gases (helium, neon, argon, krypton, xenon, radon), carbon dioxide, and other substances (such as water vapor, impurities, etc.).
Density is a measure of the mass within a specific volume, density is equal to the mass of an object divided by the volume, which can be expressed by the symbol, in the International System of Units and the Chinese legal unit of measurement, the unit of density is kilogram meter 3.
Specifics: In general, gaseous.
And the density in a gas you can compare it like this. From the point of view of relative molecular weight, the average of air is 29, and you can compare the molecular weight of other gases with the 29 of air. For example, if O2 is 32, then it is heavier than air.
CO is 28, which is lighter than air. When there is a fire faction to celebrate the disaster, why should people hunch over and flee. Both oxygen and carbon dioxide are heavier than air, and they are close to harmful gases such as CO in the upper layer.
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The density of air and the density of water, the density of water is greater.
Density of air: Under standard conditions, the density of air is approximately. And the density of pure water is: kg m3, so the density of water is more.
Air: Refers to the mixture of gases in the Earth's atmosphere. It is mainly composed of 78% nitrogen, 21% oxygen, noble gases (helium, neon, argon, krypton, xenon), carbon dioxide, and other substances (such as water vapor, impurities, etc.).
The composition of air is not fixed, and as the altitude changes, the air pressure changes, and the proportion of air composition also changes. But for a long time, people in Danliang believed that air was a single substance, until the French scientist Lavoisier first came to the conclusion that air is composed of oxygen and nitrogen through experiments. At the end of the 19th century, scientists discovered through a large number of experiments that there were rare gases such as helium, argon, and xenon in the air.
Water: (h o) is an inorganic substance composed of hydrogen and oxygen, which is a colorless and odorless transparent liquid at room temperature and pressure. Water is one of the most common substances, an important resource for the survival of all life, including humans, and the most important component of living organisms.
Water plays an important role in the evolution of life.
Density: is the buried mass per unit volume. The SI unit is kilograms per cubic meter (kg m), and grams per cubic centimeter (g cm) are also commonly used.
For liquids or gases, kilograms per liter (kg l) and grams per milliliter (g ml) are also used. But G l is generally not used.
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The density of water is high.
When water is at 1 atmosphere (atm, 1 atmosphere) (kilopascals (kpa)), the temperature fiber predate is below 0 is solid (solid water), and 0 is the freezing point of water. From 0 to 100 for liquid (usually the water is in a liquid state).Above 100 is gas (gaseous water) and 100 is the boiling point of water.
The density of pure water is kilogram cubic meters at 0 and kilogram cubic meters at boiling point, and the density decreases by 4%.In 4 is the maximum density, with a density of 1000 kg cubic meters.
The density of the air is related to factors such as air temperature, and the air density we generally use refers to the density of kilograms per cubic meter in the standard state.
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Water is denser than air.
When water is at 1 atmosphere (atm, 1 atmosphere) (kilopascals (kpa)), the temperature below 0 is solid (solid water), and 0 is the freezing point of water. From 0 to 100, the water is liquid (usually the water is in a liquid state). More than 100 is gas (gaseous water), 100 is the boiling point of water, the density of pure water at 0 is kilogram cubic meter, and the density of water at boiling point is kilogram cubic meter, and the density is reduced by 4%.
In 4 is the maximum density, with a density of 1000 kg cubic meters.
The size of the air leakage is related to factors such as air temperature, and the air density we generally use refers to the density of kilograms per cubic meter in the standard state.
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Water is most dense at 4 degrees Celsius. The commonly used density of water refers to the density of water at 4 degrees, which is 1000kg m3. Generally speaking, most objects have the property of thermal expansion and contraction, and the higher the temperature, the less dense the substance.
But water is an exception, its thermal expansion is also inflated, and only at 4 times is the smallest volume. Above 4 or below 4, the volume expands. This phenomenon is known as the "anomalous inflation phenomenon".
The relationship between the density of water and the temperature is poor
4 has the highest density of water. When the temperature is higher than 4, the density of the water becomes less and less as the temperature increases. The temperature equilibrium is below.
4 As the temperature decreases, the density of the water also decreases. When water solidifies into ice, the volume becomes larger and the density becomes smaller.
This property of water is called the abnormal expansion of water.
Usually the object has the property of thermal expansion and cold contraction, and water is more special and exists'Abnormal expansion, that is, heat shrinkage and cold expansion at 0-4, at this time, the temperature increases, and the density of water increases, while above 4 is normal, the temperature increases, and the density of water decreases.
As a result, the fish can survive in the cold winter. This is because from bottom to top, the temperature decreases from 4 to 0 (the ice-water interface), and then the ice. <>
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The density of air at room temperature and pressure is about 3, the density of water is near, the relative density of air relative to water, and the relative density of water relative to air is its silver brightness
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Under normal conditions: the watertight person has a degree of 1g cm 3, that is, 1kg l, and the air density is unknown.
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