what is the mass number of an atom that has 28 neutrons?请在5月24号之前回答 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 Chromium,mass number = 52 解析看不懂?免费查看同类题视频解析查看解答 相似问题 If 1/5 of a number is 12,What is 3/10 of the same number...
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a我和他都不满意这部作品 I and his all unsatisfied this work[translate] aaddressees destinatari[translate] a阿静 Arab League static[translate] aB 、telephone B、电话[translate] a我想那一定 I thought[translate] aWhat is the mass of # 什么是大量#[translate]...
1.To the correct number of significant figures,what is the mass of 2.5 moles deuterium gas(isotope mass=2.014 amu)?A.5.035gB.5.0g这个有效数字究竟是按2位算还是4位算?但是根据乘法有效数字的计算法则,不是应该是2位吗?2.A nearly equal volume of NaOH solution and acid are have been added....
The sample of hydrogen has a mass of 1.01g,how many hydrogenatoms make up 1.01g? 3英语翻译What is the mass of one carbon atom in atomic mass unit(amu)What is the mass of one carbon atom in grams(g)What is the mass of one oxygen atom in amu?What is the mass of one oxygen atom...
Answer to Solved what is the atomic number and atomic mass of the | Chegg.com
百度试题 结果1 题目The mass of Parcel A is 450 g.I is 285 g heavier than Parcel B.(a) What is the mass of Parcel B?ParceI/Bis(165)g. 相关知识点: 试题来源: 解析 165
What is the mass of(a)6x10^23 atoms of O(b)6x10^23 atoms of O2(c)one mole of carbon dioxide,CO2(d)two mole of silver,Ag(e)0.2 moles of silver,Ag 相关知识点: 试题来源: 解析 a)6x10^23即是1mol,即1mol原子的氧元素.质量为16*1=16gb)1mol氧原子的氧气质量为 16*1=16gc)...
1.To the correct number of significant figures,what is the mass of 2.5 moles deuterium gas(isotope mass=2.014 amu)?A.5.035gB.5.0g这个有效数字究竟是按2位算还是4位算?但是根据乘法有效数字的计算法则,不是应该是2位吗?2