22 Helium is a noble gas.Which statement is correct? A A A helium atom has eight electrons in its outer shell. B Helium exists as diatomic molecules. C Helium is used as an inert atmosphere in lamps. D There are no naturally occurring chemical compounds of helium. 相关知识点: 试题来...
The molecules in an ideal gas have no volume, do not attract or repel one another, and only interact in purely elastic collisions. Elastic collisions are when two objects bump into each other, and all of their kinetic energy is retained. ...
To determine which among the following is not a greenhouse gas, we need to analyze the gases commonly recognized as greenhouse gases and identify the one that does not fit this category. 1.Understanding Greenhouse Gases: Greenhouse gases are substances that trap heat in the atmosphere, contributing...
3. Research Radon: Radon is a radioactive noble gas. It is produced through the decay of uranium and radium found in rocks. 4. Conclusion: Since Radon is radioactive and not stable in the atmosphere, it is not found in significant amounts in the atmosphere compared to the other noble g...
The gas laws are Boyle's law, Charles' law, Gay-Lussac's law, and the Avogadro's law. Each of these laws describes a relationship between two variables when one is kept constant. Any gas that does not follow all the laws is said to deviate from the ...
a我的妹妹在她的房子里 My younger sister in hers house[translate] a我很想哭,但我已经18岁了 I very want to cry, but I already 18 years old[translate] aShall we have red wine or shite? I don't Know which one is your taste 我们将有红葡萄酒或shite ? 我不知道哪个是您的口味[translate...
We often read in novels how a seemingly respectable person or family has some terrible secret which has been concealed from strangers for years. 表面上道貌岸然的人或有声望的家庭,却有着骇人听闻,多年不让人知道的秘密,这样的事情我们经常在小说里读到. 《用法词典》 A lie which is half a truth ...
To be or not to destroy, it is a question worth considering; endure the oppressive of a poisoned arrow of destiny, or stand against the suffering of the world knows no boundaries, fought to keep them clear, both of these acts, which one is more noble?
Having a filling which contains noble gas, halogen additive that contains iodine, carbon compound such as methyl iodide, nitrogen and a nitrogen-oxygen compound such as n2o; low voltage lamp; stable switching performance, long lifedoi:US6153974 A...
这就是我的梦想。 I have a dream, the dream which is worth my lifetime pursuing, lets the life enrich has the significance, the positive optimistic treatment every one day, the health joyful is living, stretches out the arms hug happiness.This is my dream.[translate]...