Question

Как найти массу 0.25 моль H 2S

Answer 1

Дано:                         Решение:
n=0,25 моль              m=n*M
-----------------              m(H2S)=0,25 моль*34 г/моль=8.5 г
m(H2S)                      M=Mr(H2S)=2*1+32=34 г/моль
Ответ: 8.5 г

Answer 2

Finding the Molar Mass of H2S

To find the molar mass of a compound, you need to add up the atomic masses of all the atoms in the compound. In the case of H2S (hydrogen sulfide), you would add the atomic masses of two hydrogen atoms and one sulfur atom.

The atomic mass of hydrogen (H) is approximately 1.008 grams per mole, and the atomic mass of sulfur (S) is approximately 32.06 grams per mole. Therefore, the molar mass of H2S can be calculated as follows:

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 = 2.016 g/mol + 32.06 g/mol Molar mass of H2S = 34.076 g/mol

So, the molar mass of H2S is approximately 34.076 grams per mole.