Question

Скільки моль речовини міститься в 215 грам H2O​

Answer 1

Ответ:

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Answer 2

Calculating the Number of Moles in 215 grams of H2O

To calculate the number of moles in 215 grams of H2O, we can use the formula:

Number of moles = Mass (in grams) / Molar mass

The molar mass of H2O can be calculated as follows: - The molar mass of hydrogen (H) is approximately 1.008 g/mol. - The molar mass of oxygen (O) is approximately 15.999 g/mol.

Therefore, the molar mass of H2O (water) is: - 2 * (molar mass of hydrogen) + 1 * (molar mass of oxygen) = 2 * 1.008 g/mol + 15.999 g/mol = 18.015 g/mol.

Using this molar mass, we can calculate the number of moles in 215 grams of H2O.

Calculation

Number of moles = 215 grams / 18.015 g/mol

Result

The number of moles in 215 grams of H2O is approximately 11.93 moles.