In chemistry, a compound is a substance made up of two or more different chemicalelementscombined in a fixed ratio. When the elements come together, they react with each other and form chemical bonds that are difficult to break. These bonds form as a result of sharing or exchangingelectronsbe...
a-FANNYMAGNET - FANNYMAGNET[translate] aRadon is a radioactive gas released from the normal decay of uranium in rocks and soil. It is an invisible, odorless, tasteless gas that seeps up through the ground and diffuses into the air. In a few areas, depending on local geology, radon dissolv...
A white crystalline compound, c9h13n, that is the dextrorotatory isomer of amphetamine and is used in the form of its phosphate or sulfate salt as a central nervous system stimulant, both medically and illicitly. from The American Heritage Dictionary of the English Language, 4th Edition...
Aeration helps to remove certain contaminants like radon. In the next section, we'll take a closer look at exactly how water circulates in animal and plant cells. Water Survival Techniques If your water becomes contaminated and you don't have bottled water, you can purify it in a few diffe...
a我又来了 正在翻译,请等待... [translate] aLead based complex perovskite ferroelectric compound[translate] a换3档转换开关 Trades 3 grade of change-over switches[translate] aConsidering the role of radon in epidemiology, an attempt was made to make a nation-wide map of indoor 222Rn and 220Rn...
Methane does not have an atomic number. This is because methane is not an element; it is a compound molecule. It is made of one carbon atom and four...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your...
a harmful concentration.It can be a natural air component,such as carbon dioxide,that rises above its normal concentration,or something not usually found in the air,such as a lead compound emitted by cars burning leaded gasoline.A secondary air pollutant is a harmful chemical formed in the ...
aConsidering the role of radon in epidemiology, an attempt was made to make a nation-wide map of indoor 222Rn and 220Rn for India 就氡气而论的角色在流行病学方面,企图被做了做一张全国性地图室内222Rn和220Rn为印度[translate] amake a difference to 产生变化[translate] ...
Question: What is HCl gas? Answer and Explanation:1 Chemical compounds are created when two or more chemical elements bond together. Each chemical compound has a specific chemical formula. For example,... Learn more about this topic: Hydrochloric Acid | HCl Formula, Chemical Properties & Uses ...
A plasma, first identified in 1879, consists of highly charged particles with high kinetic energy. Typically, plasmas are gases that are ionized at high temperatures. Examples of these gases include helium, neon, argon, krypton, xenon and radon -- all of which are noble gases and can be ion...