A. moles = mass × molar mass B. mass = moles × molar mass C. molar mass = moles × mass D. moles = mass + molar mass 相关知识点: 试题来源: 解析 B。本题考查物质的量、质量和摩尔质量的关系。物质的量等于质量除以摩尔质量,即 mass = moles × molar mass。选项 A、C、D 关系错误。
In summary, using the ideal gas law, we can determine the number of moles of gas in a 7.71 liter vessel at a temperature of 18.6oC and a pressure of 8.35 atm. We can use the formula # of moles = (pressure * volume) / (gas constant * temperature) to find that t...
True or false? The variables that affect gases are pressure, volume, temperature, and number of moles.Gases:The law referred as the Avogadro's law is used for giving the description between the mole's amount and the volume. Volume and mole's amount is fou...
Avogadro's constant, number of moles, number of particles Dealing with these has reminded me why I hated chemistry. What is the relationship between the above 3? Given atomic weight of nitrogen and Avogadro's constant, can the number of moles be found?
It can be expressed as the mass of the solute per unit volume or the number of moles of solute per unit volume. A mole of any substance is Avogadro's number of particles. The relationship among concentration, amount of solute, and volume of solution can be used to determine the volume ...
化学计量数(Stoichiometric number).doc,化学计量数(Stoichiometric number) Section two: the application of stoichiometric in experiment I. teaching objectives 1. Basic concepts of Moore. The relationship between the amount of material, the mass of matte
The activity of an enzyme is expressed practically as specific activity, defined as micromoles (μmol) of substrate converted to product per minute per milligram (mg) of enzyme protein. Historically, a unit of activity is usually defined as that quantity of enzyme which catalyzes the conversion ...
Due to the high impact of semiconductors with respect to many applications for electronics and energy transformation, the search for new compounds and a deep understanding of the structure–property relationship in such materials has a high priority. Electron-precise Zintl compounds of the composition ...
An enhanced glucose metabolic rate is required to meet the biosynthetic and bioenergetic demands of rapidly growing and proliferating cancer cells. In this context, aerobic glycolysis seems to be an inefficient way to generate energy as the maximum net yield is 2.73 moles of ATP per mole of ...
A 10.00 L vessel containing CO2 has an internal pressure of 20.0 atm at 273 K. Calculate the number of moles of gas using the virial equation. Problem on Gas Equation: The general gas equation gives us a relationship between...