mol Mg, hence 0.0033 mol H2. Once again, using the same state of gas law, we can determine the volume of hydrogen at STP (V2 = 0.090L (738 torr / 760 torr) * (273K / 296K)) to be 0.081L. Dividing 0.081L by 0.0033mol, we find the molar volume of hydrogen to be 24.5L/mol...
Here, the Ea value is higher than ∆H◦, indicating a cathodic hydrogen evolution reaction leading to a decrease in total reaction volume. The average value of Ea–∆H◦ is 2.58 kJ mol−1, which is very close to the value of RT; this obeys the relation Ea–∆H◦ = RT. ...
The mixture was stirred overnight, and the resulting product was precipitated by tripling the volume with the addition of anhydrous ethanol, before being separated by centrifugation. The solid material was heated at 723 K for 1 h in air to remove the surface capping agents, and was then ...
根据质量和 STP 求出气体摩尔体积 Finding the Molar Volume of a Gas given mass and STP 定义变量 P = STP 时的压力(1 atm) V = O2 气体的体积(未知) n = O2 - Overseas Math于20240713发布在抖音,已经收获了10.2万个喜欢,来抖音,记录美好生活!