Question

Какое количесво молекул сероводорода содержащегося в 23 ммл раствора с молярной концентрацией 1,3 моль/литров

Answer 1

Если в одном литре раствора содержится 1,3 моль сероводорода, то в 23 мл раствора содержится х моль сероводорода. х = 1,3*23/1000 = 0,03 моль.
Считаем количество молекул сероводорода N = n*Na = 0.03*6.02*10²³ = 1.806*10²².
Ответ: 1.806*10²² молекул.

Answer 2

Calculating the Number of Hydrogen Sulfide Molecules in a Solution

To calculate the number of molecules of hydrogen sulfide (H2S) in a 23 mmol solution with a molar concentration of 1.3 mol/L, we can use the following steps:

1. Determine the Number of Moles in the Solution: - The number of moles in the solution can be calculated using the formula: ``` moles = molarity * volume (in liters) ``` - Substituting the given values: ``` moles = 1.3 mol/L * 0.023 L moles = 0.0299 mol ```

2. Convert Moles to Molecules: - To convert moles to molecules, we can use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol. - Substituting the value: ``` molecules = moles * Avogadro's number molecules = 0.0299 mol * 6.022 x 10^23 molecules/mol molecules ≈ 1.8 x 10^22 molecules ```

Therefore, the 23 mmol solution with a molar concentration of 1.3 mol/L contains approximately 1.8 x 10^22 molecules of hydrogen sulfide.

[[1 #]]