Air is a mixture of gaseous elements and compounds. Which of the following elements makes up the largest proportion of air? A. nitrogen B. water vapor C. carbon dioxide D. oxygen

Which of the following gases is the most abundant in the air we breathe?Group of answer choicesWater VaporArgonNitrogenOxygen

Which is the correct ordering of the three most abundant elements in the atmosphere, from greatest to least?Group of answer choicesOxygen, nitrogen, argonNitrogen, oxygen, hydrogenOxygen, helium, nitrogenNitrogen, oxygen, argon

Air is a mixture of colorless gases. The air that makes up the Earth's atmosphere consists primarily of nitrogen and oxygen. Air is an example of which type of factor?

The most abundant gas in Earth's atmosphere is __________ and the second most abundant is _________. aoxygen; nitrogen boxygen; argon cnitrogen; oxygen dnitrogen; argon

Name the element which:(a) is 78% of clean, dry air ........................................................................................................ [1](b) has atoms with an electronic structure of 2,8,1 ................................................................... [1](c) is extracted from hematite ................................................................................................... [1](d) forms an oxide with a giant covalent structure .................................................................... [1](e) is the gas with the slowest rate of diffusion at room temperature