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 number molecules of that s...
【判断题】The molar mass of NH 3 is 17 amu. A. 正确 B. 错误 查看完整题目与答案 【判断题】The molar mass of sodium is 22.09 amu. A. 正确 B. 错误 查看完整题目与答案 【单选题】按崩解时限检查法检查薄膜衣片应在多长时间内崩解 A. 30min B. 15min C. 10min D. 60min...
What is the molar mass of PbI2? How can the number of moles of barium nitride be determined from its mass? How many grams of barium sulfate can be produced from 0.100 mole of barium chloride? What is molar mass in chemistry? How many grams of barium chloride are needed to make 100 gra...
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...
Molar mass is the mass of one mole of a substance. We determine the molar masses from values on the periodic table. Answer and Explanation: Before we can sum all of the molar mass of the elements in acetic acid we need the chemical formula of acetic acid. Acetic acid's chemical formula...
【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...
What is the molar mass of sulfuric acid? How many grams of nitrogen are present in 2 moles of HNO3? What is the molar mass of hydrochloric acid? How many moles of sodium hydroxide are required to neutralize 0.4 moles of nitric acid?
Isaac Newton, in formulating his laws of motion, assumed the existence of a fixed, absolute space against which all motion could be measured. In 1893, the physicist Ernst Mach proposed that absolute space did not make sense and that any change in the motion of an object should be thought ...
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. ...
The mass number is the mass of one atom measured in atomic mass units, or amu. The atomic mass unit was developed to describe the mass of subatomic particles that were too small to measure in conventional units like grams or kilograms....