Question

Какое количество вещества содержится в 1000 г воды?

Answer 1

Дано:
m(H2O)=1000г
М(Н2О)=18 г/моль
Найти:
n(H2O)

n(H2O) = m(H2O) / M(H2O) = 1000 / 18 = 55,55 моль

Answer 2

Дано:
m(H2O) = 1000 г
Найти:
n(H2O)=?

M(H2O) = 18 г/моль
n(H2O) = m(H2O)/M(H2O)
n(H2O) = 1000 г/18 г/моль = 55,56 моль
Ответ: 55,56 моль

Answer 3

Amount of Substance in 1000g of Water

To determine the amount of substance in 1000g of water, we can use the molar mass of water to convert the mass of water to moles, as one mole of any substance contains Avogadro's number of particles, which is approximately 6.022 x 10^23.

The molar mass of water (H2O) is approximately 18.01528 grams per mole.

Calculation: - Step 1: Convert 1000g of water to moles using the molar mass of water. - Step 2: Determine the amount of substance in moles.

Step 1: Using the molar mass of water: ``` 1000g / 18.01528 g/mol ≈ 55.51 moles ``` Step 2: The amount of substance in 1000g of water is approximately 55.51 moles.

Therefore, approximately 55.51 moles of water are present in 1000g of water.

This calculation is based on the molar mass of water and the conversion of mass to moles