Question

Задачи по химии. Относительная плотность газовой смеси, состоящей из углекислого газа и гелия, по метану равна 2. После пропускания смеси над раскаленным углем объемная доля углекислого газа составила 14%. Вычислить объёмную долю гелия в конечной смеси.

Answer 1

Смотри фото если что-то не понятно пиши в коменты
Задачи не для слабаков)))
Легче решения мне ещё не говорили
Так что только так, к сожалению.

Answer 2

Problem:

We are given a gas mixture consisting of carbon dioxide (CO2) and helium (He). The relative density of the gas mixture with respect to methane (CH4) is 2. After passing the mixture over hot coal, the volume fraction of carbon dioxide gas becomes 14%. We need to calculate the volume fraction of helium in the final mixture.

Solution:

To solve this problem, we can use the concept of relative density and the ideal gas law. The relative density of a gas mixture is defined as the ratio of the density of the gas mixture to the density of a reference gas, which in this case is methane (CH4).

Let's assume that the initial volume fraction of carbon dioxide in the gas mixture is x, and the volume fraction of helium is y. Since the relative density of the gas mixture with respect to methane is 2, we can write the following equation:

(x * density of CO2 + y * density of He) / (density of CH4) = 2

We are also given that after passing the mixture over hot coal, the volume fraction of carbon dioxide becomes 14%. This means that the volume fraction of helium in the final mixture is (1 - 0.14) = 0.86.

Now, let's substitute the values and solve for y:

(0.14 * density of CO2 + y * density of He) / (density of CH4) = 2

Since we don't have the actual values for the densities of CO2, He, and CH4, we cannot calculate the exact volume fraction of helium in the final mixture. However, we can use the given information to determine the relationship between the volume fractions of carbon dioxide and helium.

Please note that the search results provided by You.com do not contain the necessary information to calculate the exact volume fraction of helium in the final mixture.