There are a lot of other gases in the air. Water vapor(水蒸气) and hydrogen(氢) are two examples, but there are only very, very small amounts of them.(1).What is the meaning of the underlined word "represent" in the third paragraph? A. 代表 B. 分解 C. 提取 D. 组成(2).Which...
A. The air is very clean now. B. People don't need to worry about air pollution. C. This device can help improve air quality. D. All harmful gases can be detected by this device. 相关知识点: 试题来源: 解析 C。文章说新设备能检测空气中的有害气体,这有助于提高空气质量。A选项空气现...
What are the gases that constitute the air in a refinery? Which of the following gases would be most likely to experience ideal behaviour at high pressures? a. F_2 b. Ne c. C_2H_6 What is the main gas found in...
Gasmet designs and manufactures world-class gas analysis systems and emission monitoring solutions to measure gaseous emissions from industrial processes, gases released from natural sources into the atmosphere, and gases present in working environments.
In 1992, Mexico city was named as the most polluted city in the world by the United Nations. Since that time, the relocation of factories, phasing out of leaded gasoline, and improvements to public trasportation systems have improved air quality. However, due to high population density and a...
What are the two main gases in the atmosphere? Name two major constituent gases of atmosphere What gas is the most abundant in the homosphere? Of the gases H2, SF6, CO2, He, N2, and H2O, which are molecular gases and which are atomic gases?
gases such as hydrogen can rapidly combine with gases such as oxygen or chlorine, causing them to combust. Some chemical reactions between gases and other substances occur more slowly. For example, the gradual oxidation of iron results in iron oxide (rust). In this case, oxygen, a gas, comb...
Beyond water and CO2, the other important “natural” greenhouse gases are : methane (CH4), which is nothing else than the cooking gas we use in our stoves, Nitous oxyde (N2O), the scholarly name for….. laughing gas (which is not so much amusing here), ...
Air is a mixture of gases primarily nitrogen and oxygen essential for respiration, whereas the atmosphere is Earth's protective layer of gases, encompassing air, water vapor, and other components.
burning factories and electric utility plants react with air.C.It is the gradual rise in temperature of the earth atmosphere which is caused by an increase of gases in the air trapping the heat of the sun.D.It is produced by airborne toxins that are emitted during some manufacturing ...