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Why is air homogeneous?
Air is considered homogeneous because its composition is consistent throughout, with a mix of nitrogen, oxygen, and trace gases uniformly spread out. This uniformity allows properties like temperature and pressure to be consistent at different points within the air mass.
How air is homogenous?
Air is considered homogenous because it is a mixture of gases (primarily nitrogen and oxygen) that are evenly distributed throughout the atmosphere. This means that the composition of air is relatively consistent and uniform, with no noticeable variations in its properties in different locations or at different altitudes.
How do I explain the following quote with the concept of gas mixtures (Chapter 10 concepts) and the composition of common air (i.e. the air in the atmosphere) inflammable air is hydrogen?
The air content of free hydrogen is far too small for air to be flammable by itself.
What does making models mean for science?
In order to explain theories, ideas, and concepts, scientists create 'models'. Models are a very simple ideal condition, in which the theory or equation is true and consistent. For example to calculate the motion of a ball thrown through air, one may use equations that rely on a model in which air resistance has no effect on the objects trajectory etc.
Why air is not a heterogeneous mixture?
Well, air contains 78.09% of Nitrogen, 20.95% of Oxygen, 0.03% of Carbon Dioxide and the rest of the gases like Argon, Helium, etc for about 1%. This composition of air is the same no matter where you go. If you're in Australia, the air will have this composition. If you're in South Africa, the air will have the same composition. The basic idea here is that the composition of air doesn't change which means air has a uniform composition. Homogeneous mixtures are those mixtures whose composition is same throughout the mixture and a heterogeneous mixtures are those mixtures whose composition is not same. Also, homogeneous mixtures are mixtures in which its components mix up thoroughly, i.e., the components cannot be observed whereas in a heterogeneous mixture, the individual components can be observed. In air, the Nitrogen or Oxygen cannot be observed separately. It is uniform and homogeneous. Thus, air is not a heterogeneous mixture.
How does air temperature change with atmospheric composition?
The composition of air depends upon altitude.
How does the composition of air change at the top of amountain?
The composition is the same, the air is just less dense.
Is air a material thing?
Yes, but it is not a pure substance or one whose content is chemically consistent, because it is a mixture of many elements, compounds, and water vapor. Although its general composition allows it to be used for experiments, its exact composition can vary by location, pressure, and temperature.
Is air a uniform or non-uniform mixture?
Air is a uniform mixture of gases because its components (such as nitrogen, oxygen, and others) are evenly distributed throughout the atmosphere. This means that the composition of air is consistent regardless of location.
What is the composition of gases found in inhaled air?
gas composition in air is the sum of the gas individual element and that of the air i.e oxygen and nitrogen
Explain why the composition of the air you breathe in differs from the air you breathe out?
When you breathe in, you take in oxygen from the air. In the lungs, oxygen is diffused into the bloodstream, while carbon dioxide is released from the bloodstream into the air sacs to be exhaled. This exchange of gases helps regulate the levels of oxygen and carbon dioxide in the body.
Does the composition of air by volume change?
no
