Question

Неизвестный газ имеет плотность по гелию 20,25. Что это может быть за газ? Приведите все возможные ответы:

Answer 1

Ответ:

бромоводород HBr

Объяснение:

М=D (He) * M(He)= 20,25*4=81

А далее подбираем по химическим формулам и атомным массам возможные.

Answer 2

Possible Answers for the Unknown Gas with a Density of 20.25 g/L compared to Helium

Based on the given information that the unknown gas has a density of 20.25 g/L compared to helium, there are several possible answers. However, without additional information, it is difficult to determine the exact identity of the gas. Here are some possible answers:

1. Xenon (Xe): Xenon is a noble gas that has a density of approximately 5.894 g/L at standard conditions. Compared to helium, which has a density of 0.1785 g/L at standard conditions, xenon has a much higher density. However, the given density of 20.25 g/L is significantly higher than the density of xenon. Therefore, xenon is unlikely to be the unknown gas.

2. Sulfur Hexafluoride (SF6): Sulfur hexafluoride is a gas commonly used in electrical equipment due to its excellent insulating properties. It has a density of approximately 6.17 g/L at standard conditions. Compared to helium, sulfur hexafluoride has a much higher density. However, the given density of 20.25 g/L is significantly higher than the density of sulfur hexafluoride. Therefore, sulfur hexafluoride is unlikely to be the unknown gas.

3. Unknown Gas: It is also possible that the unknown gas is a substance not commonly encountered or mentioned in the available search results. Without further information or context, it is challenging to determine the exact identity of the gas.

Please note that the above answers are based on the available search results and the given information. It is always recommended to consult scientific literature or experts in the field for a more accurate identification of the unknown gas.

Let me know if there's anything else I can help you with!