Avogadro's number relates the number of atoms to the number of moles of a certain element. This can also be used in the context of molecules. A mole of a molecule multiplied by Avogadro's number is the number of molecules it has.
百度试题 结果1 题目In one mole of a solution with a mole fraction of 0.5 water, how many water molecules would there be? A. 0.5NA B. 1.0NA C. 0.25NA D. 2.0NA 相关知识点: 试题来源: 解析 A 反馈 收藏
百度试题 结果1 题目How many molecules of CO2 are produced per mole of acetyl COA in TCA cycle? A. 1 B. 2 C. 0 D. 4 E. 3 相关知识点: 试题来源: 解析 B 反馈 收藏
How many moles of O2 are required to produce 46.0 grams of NO2? 2NO(g) + O2(g) arrow 2NO2(g) a. 8.00 moles b. 1.00 moles c. 0.500 moles d. 0.250 moles How many molecules (not moles) of NH3 are produced from 2.73 x 10-4 moles of H2? N...
c) How many hydrogen atoms are there in 17.031 \text{ g} of ammonia, How many atoms or molecules are there in a mole of a substance? How many electrons are in a hydrogen ion? What kind of molecule is water? How many neutrons does hydrogen have? How many hydrogen bonds can ethylene...
particles per mole. Answer and Explanation: Here we are given the volume of the water in mL (milliliters), and we need to figure out how many molecules are present. We shall go through a...Become a member and unlock all Study Answers ...
After the revision of the International System of Units (SI), the mole (the SI unit of amount of substance) is based on a fixed number of specified entities. This number is the fixed numerical value of the Avogadro constant N-A. Experiments for the practical realization of the mole on a...
If you make a solution of 2 g of sucrose in 100 mL of water, which is the solvent and which is the solute? Both sucrose and water are polar molecules. When they are mixed, the polar water molecules surround and attract the negative and positive areas on the polar sucrose molecules, pul...
In chemistry, a mole is a quantity used relate reactants to products in stoichiometric equations. A mole of any substance is equal to 6.02 x 10^23 particles -- usually atoms or molecules -- of that substance. For a given element, the mass (in grams) of o
The mass of one mole of an element or a compound is equal to the mass number of the molecule expressed in the units of a gram. We can find the moola mass of a compound or an element from the molecular formula. To find the molar mass, we have to add the molar mass of each atom...