Question

Найти массу оксида хрома 3 если во взаимодействии с кислородом вступает 54 г хрома

Answer 1

Ответ: смотрите приложение

Answer 2

Calculating the Mass of Chromium(III) Oxide

To find the mass of chromium(III) oxide (Cr2O3) when 54 g of chromium (Cr) reacts with oxygen, we can use the molar ratio between chromium and chromium(III) oxide to calculate the mass of the oxide produced.

The molar ratio between chromium and chromium(III) oxide is 1:1.5, as per the chemical equation: 2 Cr + 3 O2 → 2 Cr2O3

Using this molar ratio, we can calculate the mass of chromium(III) oxide produced when 54 g of chromium reacts.

Calculation: - Given mass of chromium (Cr) = 54 g - Molar mass of chromium(III) oxide (Cr2O3) = 151.99 g/mol - Molar mass of chromium (Cr) = 51.996 g/mol

Using the molar ratio and the given mass of chromium, we can calculate the mass of chromium(III) oxide produced.

Mass of Chromium(III) Oxide: ``` 54 g Cr * (1 mol Cr / 51.996 g) * (1.5 mol Cr2O3 / 1 mol Cr) * (151.99 g / 1 mol Cr2O3) = 124.2 g ```

Answer: The mass of chromium(III) oxide produced when 54 g of chromium reacts with oxygen is approximately 124.2 grams.