Question

Определить молярную массу SO3 H3AsO3 Li2CO3

Answer 1

Molar Mass of SO3

The molar mass of SO3 (sulfur trioxide) can be calculated by adding up the atomic masses of its constituent elements.

The atomic mass of sulfur (S) is approximately 32.07 grams per mole, and the atomic mass of oxygen (O) is approximately 16.00 grams per mole. Since there are three oxygen atoms in SO3, we multiply the atomic mass of oxygen by 3.

Therefore, the molar mass of SO3 is calculated as follows: Molar mass of SO3 = (atomic mass of sulfur) + (3 * atomic mass of oxygen) Molar mass of SO3 = 32.07 g/mol + (3 * 16.00 g/mol) Molar mass of SO3 = 32.07 g/mol + 48.00 g/mol Molar mass of SO3 = 80.07 g/mol

The molar mass of SO3 is approximately 80.07 grams per mole.

Molar Mass of H3AsO3

The molar mass of H3AsO3 (arsenic acid) can be calculated in a similar manner.

The atomic mass of hydrogen (H) is approximately 1.01 grams per mole, the atomic mass of arsenic (As) is approximately 74.92 grams per mole, and the atomic mass of oxygen (O) is approximately 16.00 grams per mole. Since there are three hydrogen atoms, one arsenic atom, and three oxygen atoms in H3AsO3, we multiply the atomic masses accordingly.

Therefore, the molar mass of H3AsO3 is calculated as follows: Molar mass of H3AsO3 = (3 * atomic mass of hydrogen) + (atomic mass of arsenic) + (3 * atomic mass of oxygen) Molar mass of H3AsO3 = (3 * 1.01 g/mol) + 74.92 g/mol + (3 * 16.00 g/mol) Molar mass of H3AsO3 = 3.03 g/mol + 74.92 g/mol + 48.00 g/mol Molar mass of H3AsO3 = 125.95 g/mol

The molar mass of H3AsO3 is approximately 125.95 grams per mole.

Molar Mass of Li2CO3

The molar mass of Li2CO3 (lithium carbonate) can also be calculated using the atomic masses of its constituent elements.

The atomic mass of lithium (Li) is approximately 6.94 grams per mole, the atomic mass of carbon (C) is approximately 12.01 grams per mole, and the atomic mass of oxygen (O) is approximately 16.00 grams per mole. Since there are two lithium atoms, one carbon atom, and three oxygen atoms in Li2CO3, we multiply the atomic masses accordingly.

Therefore, the molar mass of Li2CO3 is calculated as follows: Molar mass of Li2CO3 = (2 * atomic mass of lithium) + (atomic mass of carbon) + (3 * atomic mass of oxygen) Molar mass of Li2CO3 = (2 * 6.94 g/mol) + 12.01 g/mol + (3 * 16.00 g/mol) Molar mass of Li2CO3 = 13.88 g/mol + 12.01 g/mol + 48.00 g/mol Molar mass of Li2CO3 = 73.89 g/mol

The molar mass of Li2CO3 is approximately 73.89 grams per mole.