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Why is water denser than air?
Water is denser than air because water molecules are closer together and have a higher mass per unit volume compared to air molecules. This is due to the intermolecular forces present in water that cause molecules to be more tightly packed. Air molecules are further apart and have lower mass, resulting in air being less dense than water.
Why does water vapour have less density?
Water vapor has less density than liquid water because it consists of individual water molecules that are more spread out and have higher kinetic energy. This causes water vapor to be less compact and have less mass per unit volume compared to liquid water.
Why does cold water have less volume than cold water?
Cold water has a higher density than warm water, which causes it to have less volume for the same mass. This is because the molecules are closer together in cold water, making it more compact.
Why does cold water have greater mass to volume ratio than hot water?
molecules are less agitated and therefore more densely packed together
Is very salty water more or less dense than less salt water?
Very salty water is more dense than water with less salt because the dissolved salt molecules increase the mass of the water. This higher density causes the salty water to sink below less salty water.
How do things float?
things float because they are less denser then the water. second things do not float, the molecules from the water support the molecules from the thing on the water. that is how something heavy can float. it just has to be boyent meaning it is spread out enough so there is more water molecules to hold it up. if you mean in the air it is the same concept.
What determines if an object will sink or float in water?
An object will sink in water if its density is greater than that of water. If the density of the object is less than that of water, it will float. Density is a measure of how much mass is contained in a given volume, so objects with more mass in a smaller volume will sink, while objects with less mass spread out over a larger volume will float.
Do molecules of ice have less mass than the molecules of water?
Mass is just "the amount of stuff there is". We can measure it in kg. If I have 4kg ice and 4kg water, then the answer is "no", but I could just as easily have 4kg of ice and 5kg water, in which case the answer is "yes". If you mean "does freezing water make it heavier?", then the answer is no - 4kg water makes 4kg ice, and they will weigh the same. However, ice has a greater volume than water*, so freezing water will make it expand. *This is not true for every liquid/solid combo.
Why does warm water sit on top of cold water?
Warm water is less dense than cold water, so it sits on top of the cold water. This is because warm water molecules are more spread out and have less mass per unit volume compared to cold water molecules, causing warm water to be less dense and float on top of the denser cold water.
Why does steam weigh less than water?
Steam is less dense than liquid water because steam is in the gaseous state, while water is in the liquid state. The molecules in steam are farther apart and have more kinetic energy compared to liquid water molecules, which results in steam having a lower mass per unit volume.
Is it always true that the molecules of dense liquid are heavier than the molecules of lighter molecules?
NO. Water has a density greater than gasoline, but gasoline, octane anyway, has a greater molecular mass than water molecules.
How one has more molecules 9g of water or9g of sugar?
Perhaps you mean: Does sugar have more atoms than water?In a certain fixed mass of sugar/water, there will be more molecules of water than of sugar since the molecular mass of sugar is higher than that of water. We follow the rule of Mass = Number of moles of a substance * Molecular mass of the substance.We rearrange this to form Number of moles = Mass / Molecular massTherefore, since the molecular mass of sugar is higher, the number of moles of sugar in a fixed mass of sugar is lower. The number of moles of sugar is directly proportional to the number of molecules of sugar, since we follow Avogadro's Law:1 mole = 6 * 10^23 molecules (constant value)However, if you meant to ask if sugar had more atoms than water, the answer is yes, it does. Sugar (presumably glucose) has the chemical formula of C6H12O6 and thus has 24 C, H and O atoms altogether. Water, with the formula H2O, has 3 atoms of H and O altogether.I hope this was helpful! :)
