Question

Определите число молекул и массу сероводорода H2S химическим количеством 3 моль.

Answer 1

N(H2S)= 3 моль
m(H2S)= n*M
M(H2S)= 2г/моль (молярная масса водорода)* 32г/моль (молярная масса углерода)= 64 г/моль
m(H2S)= 3 моль* 64 г/моль= 192 г
N(H2S)= 3 моль÷6,02*10²³= ... тут сам(а)

Answer 2

Calculating the Number of Molecules and Mass of Hydrogen Sulfide (H2S) with 3 Moles

To determine the number of molecules and the mass of hydrogen sulfide (H2S) with a chemical quantity of 3 moles, we can use the Avogadro's number and the molar mass of H2S.

Number of Molecules: The Avogadro's number (6.022 x 10^23) represents the number of molecules in one mole of any substance.

Mass of Hydrogen Sulfide (H2S): The molar mass of H2S can be calculated by adding the atomic masses of the constituent atoms. The atomic mass of hydrogen (H) is approximately 1.008 g/mol, and the atomic mass of sulfur (S) is approximately 32.06 g/mol.

Using this information, we can calculate the number of molecules and the mass of H2S with 3 moles.

Number of Molecules of H2S: The number of molecules in 3 moles of H2S can be calculated using Avogadro's number: 3 moles * 6.022 x 10^23 molecules/mole = 1.8066 x 10^24 molecules

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Mass of H2S: The molar mass of H2S is calculated by adding the atomic masses of hydrogen and sulfur: Molar mass of H2S = (2 * atomic mass of H) + atomic mass of S Molar mass of H2S = (2 * 1.008 g/mol) + 32.06 g/mol Molar mass of H2S = 34.076 g/mol

Now, we can calculate the mass of 3 moles of H2S: Mass of 3 moles of H2S = 3 moles * molar mass of H2S Mass of 3 moles of H2S = 3 moles * 34.076 g/mol = 102.228 g

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