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...
What are the units for the molar mass of oxygen and nitrogen? What is the molar mass of a compound that has 1.807x10^24 molecules in 75 g? a. 25 g/mol b. 20 g/mol c. 30 g/mol d. 15 g/mol How many grams of oxygen are in 6.02 x 1024 CO molecules?
State the units of the variables. When using the ideal gas law, what units must be used for pressure and temperature? What are the units of the ideal gas constant in units of (mL x mmHg)/(mol x K)? What is the value of R, the universal gas constant, in SI units? What is the ...
The amount of protons and neutrons together is the mass number because electrons are so light. Atomic number denotes the element. Mass number can change depending on the amount of neutrons the atom contains. Atoms that are the same element but have different masses are isotopes. ...
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...
i.e., Molecular mass of gas=Vapour density ×2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. The vapour density of a mixture containing NO2 and N2O4 is 38.3 at 27∘C. the moles of NO2 in 100 moles of mixture are: A33.48 B53.52...
Atomic Mass and Molar Mass The periodic table lists the atomic mass and molar mass of each element. The values are the same, but their units are different. Atomic mass has the units atomic-mass-units, or AMU. Molar mass is the mass of one mole of the element, which is the mass of ...
To solve the problem, we need to find the mass of a non-volatile solute (with a molar mass of 60 g/mol) that must be dissolved in 100 g of water to decrease the vapor pressure of water by 25%. We will also calculate the molality of the resulting solution. 1. Identify the Initial...
Amount, on the other hand, simply refers to the total quantity of the substance, such as the number of grams of salt without considering the volume it’s dissolved in. 12 In scientific contexts, concentration is often expressed in units like moles per liter (Molarity) or grams per liter. ...
What is the molar mass of a compound if 0.372 mole of it has a mass of 152g?A.2.44 ×10 -3B.56.544C.408.602D.uncertainty的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题