Question

Определить молярную массу эквивалентов метала если во время сгорания 5.00 г которого получается 9.44 г оксида?

Answer 1

В оксиде металла на кислород приходится:

9,44 – 5,00 = 4,44 г кислорода

По закону эквивалентов:

Эквивалент кислорода равен 8. Следовательно,

На 5 г металла приходится 4,44 г кислорода

Э металла = 8*5/ 4,44 = 9,01 г/моль

Ответ: эквивалент металла равен 9,01 г/моль.

Answer 2

Calculation of Molar Mass of Metal

To determine the molar mass of the metal, we need to use the given information about the combustion of the metal and the resulting oxide.

Let's assume the molar mass of the metal is M g/mol.

Given: - Mass of the metal = 5.00 g - Mass of the oxide = 9.44 g

The mass of oxygen in the oxide can be calculated by subtracting the mass of the metal from the mass of the oxide:

Mass of oxygen = Mass of the oxide - Mass of the metal = 9.44 g - 5.00 g = 4.44 g

The molar mass of oxygen is approximately 16.00 g/mol.

Now, we can set up a proportion to find the molar mass of the metal:

Molar mass of metal / Molar mass of oxygen = Mass of metal / Mass of oxygen

Substituting the known values:

M / 16.00 g/mol = 5.00 g / 4.44 g

Simplifying the equation:

M = (5.00 g / 4.44 g) * 16.00 g/mol

Calculating the value:

M ≈ 18.02 g/mol

Therefore, the molar mass of the metal is approximately 18.02 g/mol.

Please note that the calculation assumes that the metal reacts completely with oxygen to form the oxide and that there are no other elements involved in the reaction.