16. Oxygen gas is( )than air, so it can replace air.A. heavierB. lighterC. No correct answer 相关知识点: 试题来源: 解析 A. heavier 氧气比空气重,因为它的密度更大。由于氧气比空气重,所以它可以取代空气。因此,正确答案是 A. heavier。
Combining pulse dose and continuous flow oxygen delivery allows the oxygen concentrator to meet a wider range of patient needs. These dual-supply concentrators can provide a larger volume of oxygen than smaller pulse units, however they need a more robust battery and they are heavier than pulse d...
. Vapors from liquefied gas are initially heavier than air and spread along ground. Runoff may create fire or explosion hazard. Containers may explode when heated. Ruptured cylinders may rocket. /Oxygen; Oxygen, compressed; Oxygen, refrigerated liquid (cryogenic liquid)//GUIDE 122: GASES - ...
while changes in wind stress have mitigated the overall oxygen loss (Fig.1). Since 1967, air-sea buoyancy fluxes have led to an average decrease in the global oxygen inventory of −94 ± 3 Tmol dec−1(Fig.1a, Supplementary Table...
. Vapors from liquefied gas are initially heavier than air and spread along ground. Runoff may create fire or explosion hazard. Containers may explode when heated. Ruptured cylinders may rocket. /Oxygen; Oxygen, compressed; Oxygen, refrigerated liquid (cryogenic liquid)//GUIDE 122: GASES - ...
The heavier isotopes, deuterium (2H or 2D) and tritium (3H or 3T), contain one neutron and two neutrons, respectively, in addition to the single proton. These schematic pictures of nuclei are actually not realistic. The isotopes of a given element are distinguished by using a superscript to...
The sustainability of life on Earth relies on nuclear shells: the vast majority of the oxygen nuclei in the air that we breathe (oxygen-16) is doubly magic because it has eight protons and eight neutrons. This makes it highly abundant. Adding neutrons to 16O creates heavier oxygen isotopes;...
This is primarily because the molecular weight of oxygen is higher than that of air, causing the heavier oxygen-rich air to move downward while lighter air rises. When the lighter air mixes with oxygen, it flows back downward, creating a circulation that leads to an oxygen-rich environment. ...
Low energy consumption:oxygen concentrator devices consume little electricity. Some models can also run on batteries, but depending on their autonomy and the size of the batteries, these devices might be heavier to carry. Cost:one of the other main advantages of an oxygen concentrator is its cost...
The steam is heavier than the hydrogen but lighter than the CO2. the CO2 was heated to above boiling point for normal water so it doesn't cause the steam to condense. the middle section is cooler tho and also has lower CO2 concentration with piped cold dirty water cooling. i haven't ...