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...
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 ...
What Is Molar Mass? Molar mass is the mass of one mole of a substance. A mole is defined as the number of atoms in 12 grams of thecarbon-12isotope. This is always a fixed number, known as Avogadro's number. Therefore, the molar mass of a substance is the mass of Avogadro's numbe...
【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...
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What is the mass of a mole of Ca(OH)2? How many milliliters of a 0.40 M solution of nitric acid solution would be required to neutralize a solution containing 1.5 g of potassium hydroxide in water? How do you calculate molar mass?
M即为molar mass分子质量.这里p=2.39 g/lT需要由摄氏温度转变为开氏温度T=23.0℃=273.15+23℃=296.15KP需要转换为帕斯卡P=715 mm hg=715 /7.5x10^-3=9.533x10^4 paR为常数=8.314,若p用帕(Pa),V用升(L)为单位时,其数值为8315M=61.94 g/mol通过这个问题我也重新学习了下上学时的知识. ...
It is convenient for measurement purposes to know how much of a substance is dissolved in a given volume of solution; this is what chemists mean by "concentration." Molarity is the most common way of expressing concentration when working with solutions and chemical reactions. The reason is that...
Molar Mass of a Gas:We are familiar with the pressure (P), volume (V), temperature (T), and number of moles (n) of gas in the Ideal Gas Law equation but the molar mass of the gas can also be calculated from the same equation. Like any other calculati...