Substances which are made up of only one kind of atom are called S36 ___ and there are about a hundred of these -- the same S37 ___as there are kinds of atom. These are the substances from which everything else is made. Aristotle taught that there were four elements -- earth, ai...
CO2 is ___ one carbon atom(碳原子)and two oxygen(氧)atoms. A. made from B. made of C. made up of 相关知识点: 试题来源: 解析 C [详解] 句意:CO2有一个碳原子和两个氧原子组成。 考查动词短语。A. made from表示由……制成,看不出原材料;B. made of表示由……制成,可以看出原材料;...
【题目】CO2 is ___ one carbon atom(碳原子)and two oxygen(氧)atoms. A.made fromB.made ofC.made up of试题答案 在线课程 【答案】C 【解析】 句意:CO2有一个碳原子和两个氧原子组成。 考查动词短语。A. made from表示由……制成,看不出原材料;B. made of表示由……制成,可以看出原材料;C....
Intro to General ChemistryClassification of Matter Previous problem Next problem 2:48 minutes Open Question Which term describes a pure substance that is made up of only one type of atom? Verified Solution This video solution was recommended by our tutors as hel...
【题目】CO2 is ___ one carbon atom(碳原子)and two oxygen(氧)atoms. A.made fromB.made ofC.made up of试题答案 在线课程 【答案】C 【解析】 句意:CO2有一个碳原子和两个氧原子组成。 考查动词短语。A. made from表示由……制成,看不出原材料;B. made of表示由……制成,可以看出原材料;C....
49. A molecule of water is made up of two atoms of hydrogen and one atom of oxygen.(改为同义句) A molecule of water two atoms of hydrogen and one atom of oxygen 相关知识点: 试题来源: 解析 【答案】consistsof【核心短语/词汇】bemadeupof 由...组成【翻译】一个水分子是由两个氢原子和...
题目Some of the most famous scientific discoveries happened by accident. From the microwave oven to penicillin, scientists trying to solve a problem have sometimes found unexpected things. This is exactly how we created phosphorene nanoribbons(磷烯纳米带) - a material made from ...
Hence, the age of the universe is 13.7 billion years in this model. The excitation and absorption of photons by the hydrogen atom are put in a geometry comprising a momentum observer and another observer of tangential velocities. Hereby the electron oscillating in one dimen- sion on average co...
aWater is a very simple molecule (two hydrogen atoms combined with one oxygen atom), but that simple combination allows the emergence of exceptional properties that have made water the most important solvent on earth and an essential support to the development of life. [translate] ...
of the universe, because when the cup falls inside it is lost forever. Wheeler didn't like the whole thing. He turned the problem over to Jacob Bekenstein, one of his students at Princeton. To solve the dilemma, he proposed ageneralized second law: the entropy of the universeplusthat of...