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There is a thing called heavy water. It is pure water that has a deuterium in it known as D20 instead of H20. It is pure but does not have the same mass.
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∙ 15y ago
Yes, all samples of pure water have the same mass because the mass of water is determined by its chemical composition, which consists of two hydrogen atoms and one oxygen atom. This means that regardless of the volume or container, the mass of pure water remains constant.
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∙ 11y agomass and volume
Mitza Solis
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∙ 11y agomass
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Should the density of Al be the same for all Al samples?
The density of pure aluminium is the same for all samples.
The density of a substance is the same for all samples of the substances?
Density is simply the mass divided by volume. This means that it is the amount of the substance in a specific unit of space. Because a pure substance indicates that it is exactly that, a substance made of a specific combination of elements, it will always have the same density because those elements can only take one form in order for it to be pure.
Will pure water have the same density as salt water?
No, pure water will have a lower density than salt water. Salt water is denser due to the presence of dissolved salts which increase its mass without significantly increasing its volume, resulting in a higher density compared to pure water.
What is the principle of common proportions?
The relative proportions of ions in sea water are constant. In other words, the percentage accounted for by each ion is always the same. This implies that the oceans are chemically well-mixed and that ocean salinity varies almost entirely as a result of the addition or removal of pure water, not the addition or removal of salts. - A.J. F
How can you use Dalton's atomic theory to explain why every sample of pure substance has the same properties?
Dalton's atomic theory states that elements consist of indivisible particles called atoms and that atoms of the same element are identical in size, mass, and properties. Therefore, every sample of a pure substance will have the same properties because each sample is made up of the same type of atoms arranged in the same way.
Are there different water masses?
pure water has the same density, and the same mass
Does all pure water have the same mass and volume?
No.
Should the density of Al be the same for all Al samples?
The density of pure aluminium is the same for all samples.
Are all samples of water have the same composition of hydrogen and oxygen?
Yes, all samples of water have the same composition of hydrogen and oxygen, with each water molecule containing two hydrogen atoms and one oxygen atom. This is consistent regardless of the source or location of the water.
What is the volume of 250 g of sea water The volume of asame mass of pure water will it be higher or lower than thatsea water?
The volume of 250g of sea water will be slightly less than the volume of the same mass of pure water due to the presence of dissolved salts and minerals in sea water. The dissolved solids in sea water increase its density, thus requiring less volume to accommodate the same mass compared to pure water.
Which is more dense 1 mL of water or 50 L of water?
The answer is: No. Density is a property of a substance, and doesn't depend on the size of the sample. Samples of different sizes all have the same density, as long as they're all samples of the same substance, their compositions are all the same, and the conditions are the same in every case. (Samples of ice and water have different density, because the conditions are different.)
The density of a substance is the same for all samples of the substances?
Density is simply the mass divided by volume. This means that it is the amount of the substance in a specific unit of space. Because a pure substance indicates that it is exactly that, a substance made of a specific combination of elements, it will always have the same density because those elements can only take one form in order for it to be pure.
Why do two samples with the same substance with the same volume HAVE to have the same mass?
Because they are of the same substance they have the same density density = mass/volume
Is The density of a substance is the same for all samples of the substance?
Not necessarily. The temperature of the samples would have to be the same. It can also vary with how pure the substance is.
Will pure water have the same density as salt water?
No, pure water will have a lower density than salt water. Salt water is denser due to the presence of dissolved salts which increase its mass without significantly increasing its volume, resulting in a higher density compared to pure water.
What is the principle of common proportions?
The relative proportions of ions in sea water are constant. In other words, the percentage accounted for by each ion is always the same. This implies that the oceans are chemically well-mixed and that ocean salinity varies almost entirely as a result of the addition or removal of pure water, not the addition or removal of salts. - A.J. F
How can you use Dalton's atomic theory to explain why every sample of pure substance has the same properties?
Dalton's atomic theory states that elements consist of indivisible particles called atoms and that atoms of the same element are identical in size, mass, and properties. Therefore, every sample of a pure substance will have the same properties because each sample is made up of the same type of atoms arranged in the same way.
