A newly discovered gas has a density of 2.39 g/L at 23.0°Cand 715 mm Hg.What is the molar mass of the gas? 答案 理想气态方程(克拉伯龙方程)PV=NRT由N=m/M ,PV=(m/M)RT,左边移过来,右边移过去就是PM=pRT p为密度.M即为molar mass分子质量.这里p=2.39 g/lT需要由摄氏温度转变为开氏...
11.Calculate the density of a piece of bone with a mass of 3.8 grams and a volume of 2.0 cubic centimeters.12.What is the molar mass of oxygen,O2?(Round to four significant figures only.) 答案 1.22.lone3.nuclear fission4.232/325.unpolar6.positive7.0.558.suspension9.Mg10. ionic11. (...
Molar Mass of a Gas:We are familiar with the pressure (P), volume (V), temperature (T), and number of moles (n) of gas in the Ideal Gas Law equation but the molar mass of the gas can also be calculated from the same equation. Like any other calculati...
What is the density of argon gas (Ar) at 1.42 bar and 13.3^{\circ}C? Express your answer in g/L. What are the properties of ionic bonds? What chemical properties do all the alkali metals have? What are the physical properties of the element sulfur?
Molar mass is calculated by adding the mass number of each element. So for the first question, since 22.4L is one mole of nitrous oxide gas, then 6.00 / 22.4 = 0.268 mol N2O. T hen for the molar mass, the mass number of nitrogen is 14.01, foroxygen is 16.00, adding two nitrogen ...
What is the density of helium gas?Helium GasHelium is a gas and is the second element on the periodic table of elements. It has no color and is non-toxic. It also has the lowest boiling point out of all the elements.Answer and Explanation: ...
What is HCl gas? Answer and Explanation:1 Chemical compounds are created when two or more chemical elements bond together. Each chemical compound has a specific chemical formula. For example,... Learn more about this topic: Hydrochloric Acid | HCl Formula, Chemical Properties & Uses ...
What is a Diamond Anvil Cell? Discussion Comments Byanon114831— On Sep 30, 2010 No the opposite. Higher entropy means less chaos (energy in the system has dissipated, we are close to the death of the universe, close to equilibrium). Low entropy i.e. when we add more energy to the ...
The Ideal Gas Law may be used to calculate density. Once again, the result is only an approximation that is most accurate at low temperature and pressure values. Thedensityof air is the mass per unit volume ofatmospheric gases. It is denoted by the Greek letter rho, ρ. The density of ...
The molar concentration of ATP in cells is usually 1-10 mM. ATP can be produced through various cellular pathways. The most typical pathway is the oxidative phosphorylation in mitochondria catalyzed by ATP synthase, or the synthesis through photosynthesis in plant chloroplasts. The main sources of ...