Question

Элемент строение 2е 8е 7е массой 71г прореагировал с водородом.найдите массу образовавшегося газа.​

Answer 1

Ответ:

см. фото

Объяснение:

Answer 2

Calculation of the Mass of the Gas Produced

To calculate the mass of the gas produced when an element with atomic numbers 2, 8, and 7, and a mass of 71 grams reacts with hydrogen, we need to determine the identity of the element. Unfortunately, the information provided does not specify the element in question. Therefore, it is not possible to provide an accurate calculation without this information.

If you can provide the atomic symbol or name of the element, I would be happy to assist you further in calculating the mass of the gas produced.