mass = moles × molar mass C. molar mass = moles × mass D. moles = mass + molar mass 相关知识点: 试题来源: 解析 B。本题考查物质的量、质量和摩尔质量的关系。物质的量等于质量除以摩尔质量,即 mass = moles × molar mass。选项 A、C、D 关系错误。反馈 收藏 ...
The molar mass of a substance is the mass of one mole of that substance. What is the unit of molar mass? A. g/mol B. mol/g C. L/mol D. mol/L 相关知识点: 试题来源: 解析 A。本题考查摩尔质量的单位。摩尔质量是指单位物质的量的物质所具有的质量,单位是克每摩尔(g/mol)。选项 B...
and a given number of grams of one substance is not necessarily the same strength as the same number of grams of another substance, it is a very useful method of measuring chemicals relatively simply. The molar mass of a substance also equals...
The molar mass M of oxygen is 0.0320 kg/mol. What is the root-mean-square speed v rms at 300 K? A. 48.3m/s B. 483m/s C. 483km/h 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: B 复制 纠错 举一反三 下列选项中,属于生态...
Gram Molecular Mass:The gram molecular mass is the same idea as the molar mass of a substance. The periodic table lists all of the elements' molar masses. It is the average of all of the isotopes of that element.Answer and Explanation: ...
Molecular mass is also called molecular weight. Because the mass is relative to carbon-12, it's more correct to call the value "relative molecular mass". A related term is molar mass, which is the mass of 1 mol of a sample. Molar mass is given in units of grams. ...
As such, the polyethylene-glycol-conjugated adenosine deaminase (PEG–ADA) and ADA gene therapy have been developed as the first enzyme-replacement therapy to treat ADA-SCID58. On the basis of our findings, further research on the molecular action of PEG–ADA and its repurposing in cancer ...
【解析】molar mass摩尔质量:0.88g/0.02mol=44g/molChemical formula求化学方程式,楼主你没给完整帮不到你。如果满意,请采纳,有任何疑问也欢迎提问,谢谢。相关推荐 1【题目】The mass of 0.02mol of a substanceis 0.88g1.what is the molar mass of this substance?2.what is its chemical formula?求答案...
The molar mass M of oxygen is 0.0320 kg/mol. What is the most probable speed v P at 300 K? A. 395km/h B. 39.5m/s C. 395m/s 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: C 复制 纠错 举一反三 烈士公园南门前往芙蓉路立...
Calculating the Molar Mass of a Compound: In order to calculate the molar mass of any compound, we only need to know what elements are contained in the compound and what the molar mass of the elements are. Answer and Explanation: