结果1 题目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...
What is the mass of— (a) 1 mole of nitrogen atoms? (b) 4 moles of aluminium atoms (Atomic mass of aluminium = 27)? (c) 10 moles of sodium sulphite(Na2SO3)? View Solution (a) Calculate the formula unit mass ofNa2SO4 (b) What is the mass of one mole of sulphur atoms?
If 3 moles of an element have a mass of 222.0 g, what is the mass of 1 atom? How to calculate the mass of 20.0 moles of He ? Calculate the mass of 0.75 moles of CO2. What is the mass of 1 mole of atoms for an element?
What is the mass of 1 mole of atoms of Pt?Mole:1 mole is a measurement that is used for the qunatitative measurement of the substance. 1 mole of a particle have 6.022 {eq}\times {/eq} 10{eq}^{23} {/eq} particles (atoms, ions, electrons or molecules)....
The Mole is a unit that represents a certain number. It is defined as the number of carbon atoms contained in a pure sample carbon-12 of mass {eq}12\;\rm g {/eq}. The constant number of called the Avogadro's constant. The order of the magnitude of Avogadro's constant is {eq}23...
What is the ratio of molecules between 1 mole of H(2)O and 1 mole of s... 01:23 If the atomic masses of C and S are 12 and 32 respectively, then atom ... 01:11 What is the mass of a mole of water containing 50% of heavy water (D(2... 02:03 What is the mass of a...
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...
Hence, 1 mole of Sodium weighs 23 grams.We know,Since the atomic mass of Sodium is 23, we can also write it as 23 g/mol.Therefore, we conclude that Option B is the correct answer.Additional Information:The atomic number of a chemical element is the n...
The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms =6.022 × 1023 atoms• The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023). ...
Like all units, a mole has to be defined or based on something reproducible. The present definition of the mole is defined, but it used to be based on the number of atoms in a sample of the isotope carbon-12. Today, a mole isAvogadro's numberof particles, which is exactly 6.02214076...