The oxygen atom is nearly___ the hydrogen atom.相关知识点: 试题来源: 解析 16 times as heavy as15 times heavier than16 times the weight of 解析: 第7题需要填入介词,根据句意和固定搭配,应填入“For”,表示“因此”。 第8题需要填入动词的-ing形式,构成“keep doing sth.”结构,表示“继续做某事...
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;...
Each kind of atom makes up a pure substance called an element. You may have heard of oxygen, lead, and gold. Well, these are all examples of elements. Can you believe that a pure gold necklace is made up of billions of gold atoms?
However, it is also used to refer to an atom-type, such as in the statement that "acetic acid contains oxygen", meaning that it contains oxygen atoms. Of course, acetic acid is not an element, and it is not a mixture of elements. In order to make it from the elements, you need...
aTell me whyAm I the one your all belongs to- why me? null[translate] aso you lader 如此您lader[translate] aAn atom of sulfur is 32 times heavier than an atom ot hydrogen, or twice as heavy as an atom of oxygen. 硫磺原子比原子ot氢32次重或者两次重作为氧气原子。[translate]...
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...
[translate] a용융 도금 기술일반 从元素技术成就它草拟 [translate] a1. An atom of sulfur is 32 times heavier than an atom ot hydrogen, or twice as heavy as an atom of oxygen. 1. 硫磺原子比原子ot氢32次重或者两次重作为氧气原子。 [translate] 英语...
An atom has three types of very tiny particles called protons, neutrons and electrons. The center of an atom is called the nucleus, and it is made up of protons and neutrons. The electrons in an atom fly around and above the nucleus in a cloud-like formation. The protons have a positiv...
【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....
Draw an orbital diagram showing valence electrons, and write the condensed ground-state electron configuration for each: (a) Ba. (b) Co. (c) Ag. What is the formal charge on the oxygen atom in (CH_3)_2OCH_2CH_3? What is the symbol of the element that has the following electron co...