WitrynaThe air in the atmosphere is a mixture of gases. Most of the atmosphere is nitrogen (80%) with around 20% oxygen and other trace gases. ... O2, and that’s the stuff we need to breathe in. Witryna1 / 20. Air is a mixture, 78% nitrogen, 21% oxygen, 1% other gases. Nitrogen = most abundant, unreactive (passes through lungs without changing). Most life does not obtain nitrogen through the air. Oxygen = key role in our survival, most abundant in earth's crust. We exhale carbon dioxide into the atmosphere. Argon = 0.9% of air, unreactive.
Question 13 options: The air that we breathe is actually a mixture...
Witryna5 sty 2024 · The air we breathe is mostly a mixture of oxygen and hydrogen. How do air molecules change above 100 km? Gases are no longer evenly mixed but layered. … WitrynaHelium/oxygen mixtures were used according to two fundamentally different therapeutic approaches: first, to lower the work of breathing and thus to relieve respiratory muscle load 2 – 8 and second, as a carrier gas mixture for drug nebulization to improve bronchodilator deposition in the airways. 9 – 11 Similar to asthma, inconclusive ... michigan reliance on jury demand
What are pure substances? - BBC Bitesize
WitrynaYes, air is a mixture. It consists of different atoms and it can be separated PHYSICALLY. This makes air eligible to be considered a mixture. In chemistry, mixture is a matter that consists of 2 or more types of atoms that is able to be broken down PHYSICALLY. Air consists of various elements and compounds including nitrogen, … Witryna16 kwi 2024 · They are the air we breathe, the food and drink we consume and the fabrics we wear. By studying how chemists distinguish pure substances from mixtures and solutions, students will start to … Witryna28 maj 2024 · Air is a gas/ gas/gas solution. The air is approximately 80% Nitrogen which could be considered the solvent of the atmosphere.. The air is approximately 20% Oxygen which could be considered the solute of the atmosphere . there are also trace amounts of other gases, dissolved into the atmosphere, Carbon dioxide, water vapor, … the numbers people podcast