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 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)....
What is the mass of one mole of carbon-12? What is the molecular weight of nitrogen? What is the molecular formula of the compound CH2? What is the molecular formula for methanol? What is the mass of 1 mol of atoms for an element?
What is the mass of 1 mole of a raindrop?Mole: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 o...
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?
What is the enthalpy for the following reversed reaction: CO2---> CO + 1/2O2 Answer must be in kilojoules per mole. ?H=??? Calculate the change in the enthalpy of combustion for the combustion of CO to CO_2 at (a) 298 K (b) 1470 K. ...
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...
Mass of 1 mole of nitrogen atoms is: A28 g B14.0 g C28 amu D14 amuSubmit What is the mass of 0.5 mole of ozone molecule? A8 g B16 g C24 g D48 gSubmit What is the mass of: (a) 0.2 mole of oxygen atoms? (b) 0.5 mole of water molecules? View Solution What is the mass...
number (6.02214076 × 1023) is the number of molecules that constitutes the atomic weight of a molecule in grams (g). For example, water is two hydrogen atoms with a weight of 1 g each and one oxygen atom with a weight of 16 g, meaning that one mole of water molecules weighs 18 g...
A biopsy might be recommended whenever there is an important medical question the biopsy could help answer. Here are just a few examples: Amammogramshows a lump or mass, indicating the possibility ofbreast cancer. A mole on theskinhas changed shape recently and melanoma is possible. ...