Doskey CM, van `t Erve TJ, Wagner BA, Buettner GR (2015) Moles of a substance per cell is a highly informative dosing metric in cell culture. PLOS ONE 10:e0132572.C.M. Doskey, T.J. van 't Erve, B.A. Wagner, G.R. Buettner, Moles of a substance per cell is a highly ...
Suppose the mass of one mole of a substance is 45.0 grams. How many moles of the substance are present in 0.568 grams of the sample? How many moles of N2 has a mass of 130.10 grams? The ___ of a substance is the mass (in grams) of 1 mole o...
Mass and moles of a substance or compound can be converted into one another using the molar mass. moles=massmolarmass The molar mass of an element can be found in the periodic table while the molar mass of a compound is equal to the sum of the individual molar mass...
We can use the ratio of reacting volumes of gases to deduce the stoichiometry of a reaction. If we mix 20 cm3 of hydrogen with 10 cm3 of oxygen and explode the mixture, we will find that the gases have exactly reacted together and nohydrogenor oxygen remains. According to Avogadro'shypot...
解析 C。本题主要考查摩尔的概念。摩尔是物质的量的单位,1 摩尔物质含有阿伏伽德罗常数个微粒。选项 A 克是质量单位;选项 B 升是体积单位;选项 C 微粒,1 摩尔物质含有阿伏伽德罗常数个微粒,所以与摩尔有对应关系;选项 D 千克是质量单位。反馈 收藏
The meaning of MOLE is a pigmented spot, mark, or small permanent protuberance on the human body; especially : nevus. How to use mole in a sentence.
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
12 Deduce the formula of aluminium oxide. Ions present: Al3+ and O2–. For electrical neutrality, we need three O2– ions for every two Al3+ ions. (3 × 2−) + (2 × 3+) = 0 So the formula is Al2O3. The formula of a covalent compound is deduced from the number of electr...
Parts per million (ppm) is a unit of concentration. When concentration of a substance is low, such as water contaminated with certain metals (iron, cadmium or magnesium), ppm becomes more convenient than standard units of concentration – molarity or weight percent – used in chemistry. A mol...
a) 1 mole= molar mass of a substance. therefore 1 mole of carbon atoms weigh = 12g therefore 5 moles of carbon atoms will weigh = 12 xx 5=60g Hence, Raunak's container has weigh=60g In the same way, therefore 1 mole of sodium atoms weigh = 23 g