一些化学问题（英文版）1.Ionic compounds have very high melting points.Explain at least two forces that cause this physical characteristic.2.List bonds in order of bond strengtha.Hydrogen bond between H2Ob.Covalent bond between H and O in w

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/13 22:50:17
一些化学问题（英文版）1.Ionic compounds have very high melting points.Explain at least two forces that cause this physical characteristic.2.List bonds in order of bond strengtha.Hydrogen bond between H2Ob.Covalent bond between H and O in w

一些化学问题（英文版）1.Ionic compounds have very high melting points.Explain at least two forces that cause this physical characteristic.2.List bonds in order of bond strengtha.Hydrogen bond between H2Ob.Covalent bond between H and O in w
一些化学问题（英文版）
1.Ionic compounds have very high melting points.Explain at least two forces that cause this physical characteristic.
2.List bonds in order of bond strength
a.Hydrogen bond between H2O
b.Covalent bond between H and O in water
c.Ionic bond between NA+ and Cl-
d.Covalent bond between the two hydrogen atoms in hydrogen gas H2
3.How many calories would it take to boil 100g of water that started at 25 oC?if one calorie equals 4.184 Joules,how many Joules would it take to boil the same 100g of water starting at 25 oC?
最好用英文回答哈,

一些化学问题（英文版）1.Ionic compounds have very high melting points.Explain at least two forces that cause this physical characteristic.2.List bonds in order of bond strengtha.Hydrogen bond between H2Ob.Covalent bond between H and O in w
1、ionic bond,lattice energy
2、a3、The specific heat of water is 1000cal./(kg•℃),so the energy is 0.1*1000*(100-25)=7500cal.=7500*4.184=31380J

看不懂~

一些化学问题（英文版）1.Ionic compounds have very high melting points.Explain at least two forces that cause this physical characteristic.2.List bonds in order of bond strengtha.Hydrogen bond between H2Ob.Covalent bond between H and O in w 化学,英文,高中题目Answer the following questions on covalent bonds: 1. Describe 2 main differences between an ionic and a covalent bond. 2. What is a polar covalent bond? C的一些基本知识是什么（化学） 问一些问题英文 化学问题C选项 问一些化学问题5（英文的).有计算的1）A vessel with a volume of 43 L contains 8 g of nitrogen gas,26 g of hydrogen gas,and 83 g of Argon gas.At 89 ºC what is the total pressure in the vessel in Pa?2）How much energy in J is needed 问一些问题用英文怎么说? 一些敏感生理上的问题 英文 问一些化学问题3（英文的）The transformation shown below can be accomplished in TWO reaction steps.From the following list,select the two reagents (or sets of reagents) which would most effectively bring about this conversion.Reagents:1.Co 问一些化学问题4（英文的)Give the general term (one word) used to describe a reagent which seeks electrons for bond formation: 化学问题,醋酸与C反应吗 1.what properties of ionic compounds suggest that ionic bonds are strong2.what types of elements form ionic bonds with each other4.what is the minimum number of different ions in the formula of an ionic compound?explain 蒽……我是想知道这些 ionic compounds是什么意思 关于化学的一些问题（说明原因）1.下列化合物中,具有+1价原子团的是A Mg（OH)2 B. FeSO4 C.KCl2.下列关于分子原子离子构成物质的说法中,不正确的是A氯原子和氢原子结合成氯化 下面是我的一些化学问题,请说清楚为什么选这个答案.1.已知在相同情况下,氧气的密度大于空气的密度,则空气中氧气的质量分数（）A.约等于21% B.大于21%C.小于21% D.无法确定为什么选B?2.空气 我想提问一些化学问题：1.化学里的物质什么时候会变价?2.哪些可以做干燥剂?用的是什么化学性质? 谁能帮助我解决一些化学问题QQ343896813 初三的化学知道 给一些英文的歌曲C WALK