Question

Обрахуйте масу барій нітрату кількістю речовини 0.4 моль

Answer 1

Объяснение:

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Answer 2

Calculating the Molar Mass of Barium Nitrate

To calculate the molar mass of barium nitrate (Ba(NO3)2) and then determine the mass of 0.4 moles of the substance, we can follow these steps:

1. Molar Mass of Barium Nitrate (Ba(NO3)2): - Barium (Ba) has a molar mass of 137.33 g/mol. - Nitrate (NO3) has a molar mass of 62.00 g/mol. - Therefore, the molar mass of barium nitrate (Ba(NO3)2) can be calculated as: ``` Molar mass = (1 * molar mass of Ba) + (2 * molar mass of NO3) = (1 * 137.33 g/mol) + (2 * 62.00 g/mol) = 137.33 g/mol + 124.00 g/mol = 261.33 g/mol ```

- So, the molar mass of barium nitrate (Ba(NO3)2) is 261.33 g/mol .

2. Calculating the Mass of 0.4 Moles of Barium Nitrate: - To find the mass of 0.4 moles of barium nitrate, we can use the formula: ``` Mass = Number of moles * Molar mass ``` - Substituting the values, we get: ``` Mass = 0.4 moles * 261.33 g/mol = 104.532 g ```

- Therefore, the mass of 0.4 moles of barium nitrate is 104.532 grams.

So, the mass of 0.4 moles of barium nitrate is approximately 104.532 grams.