Question

Вычислите молярные массы бинарных соединений серы (II) с кислородом, магнием, железом (III), водородом.

Answer 1

М(SO)=32+16=48г/моль

M(MgS)=24+32=56г/моль

M(Fe2S3)=2*56+3*32=176г/моль

M(H2S)=2+32=34г/моль

Answer 2

Molar Masses of Binary Compounds

To calculate the molar masses of binary compounds, we need to determine the atomic masses of the elements involved and then sum them up according to the chemical formula of the compound. Here are the molar masses of binary compounds with sulfur (II) and the following elements:

1. Sulfur (II) with Oxygen (O): - The chemical formula for this compound is SO. - The atomic mass of sulfur (S) is 32.06 g/mol. - The atomic mass of oxygen (O) is 16.00 g/mol. - The molar mass of SO is calculated as follows: - Molar mass = (atomic mass of S) + (atomic mass of O) - Molar mass = 32.06 g/mol + 16.00 g/mol - Molar mass = 48.06 g/mol

2. Sulfur (II) with Magnesium (Mg): - The chemical formula for this compound is MgS. - The atomic mass of sulfur (S) is 32.06 g/mol. - The atomic mass of magnesium (Mg) is 24.31 g/mol. - The molar mass of MgS is calculated as follows: - Molar mass = (atomic mass of Mg) + (atomic mass of S) - Molar mass = 24.31 g/mol + 32.06 g/mol - Molar mass = 56.37 g/mol

3. Sulfur (II) with Iron (III): - The chemical formula for this compound is Fe2S3. - The atomic mass of sulfur (S) is 32.06 g/mol. - The atomic mass of iron (Fe) is 55.85 g/mol. - The molar mass of Fe2S3 is calculated as follows: - Molar mass = (2 * atomic mass of Fe) + (3 * atomic mass of S) - Molar mass = (2 * 55.85 g/mol) + (3 * 32.06 g/mol) - Molar mass = 111.70 g/mol + 96.18 g/mol - Molar mass = 207.88 g/mol

4. Sulfur (II) with Hydrogen (H): - The chemical formula for this compound is H2S. - The atomic mass of sulfur (S) is 32.06 g/mol. - The atomic mass of hydrogen (H) is 1.01 g/mol. - The molar mass of H2S is calculated as follows: - Molar mass = (2 * atomic mass of H) + (atomic mass of S) - Molar mass = (2 * 1.01 g/mol) + 32.06 g/mol - Molar mass = 2.02 g/mol + 32.06 g/mol - Molar mass = 34.08 g/mol

Therefore, the molar masses of the binary compounds are as follows: - SO: 48.06 g/mol - MgS: 56.37 g/mol - Fe2S3: 207.88 g/mol - H2S: 34.08 g/mol

Please note that the molar masses provided are approximate values and may vary slightly depending on the isotopic composition of the elements.

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