Question

4. Имеется 63 л хлора Cl, при н. у. Определите количество вещества хлора, его массу и число меющихся молекул хлора.​

Answer 1

Ответ:

ниже

Объяснение:

количество - 63/22,4= 2,8 моль

масса - 2,8 * 35,5=99,4 г

число молекул - 2,8 * 6*10²³= 16,8*10²³

Answer 2

Calculating the Amount of Substance, Mass, and Number of Molecules of Chlorine

To calculate the amount of substance, mass, and the number of molecules of chlorine, we can use the given information that there are 63 liters of chlorine gas at standard conditions.

1. Amount of Substance of Chlorine: - The amount of substance can be calculated using the ideal gas equation: \( n = \frac{V}{V_m} \), where \( V \) is the volume of the gas and \( V_m \) is the molar volume at standard conditions. - At standard conditions, the molar volume of a gas is approximately 22.4 liters per mole.

Using the given volume of 63 liters, we can calculate the amount of substance of chlorine: \[ n = \frac{63 \, \text{liters}}{22.4 \, \text{liters/mol}} \]

The amount of substance of chlorine is approximately 2.8125 moles.

2. Mass of Chlorine: - The mass of chlorine can be calculated using the molar mass of chlorine, which is approximately 35.5 grams per mole. - The mass can be calculated using the formula: \( m = n \times M \), where \( n \) is the amount of substance and \( M \) is the molar mass.

Using the calculated amount of substance, we can find the mass of chlorine: \[ m = 2.8125 \, \text{moles} \times 35.5 \, \text{g/mol} \]

The mass of chlorine is approximately 99.78125 grams.

3. Number of Molecules of Chlorine: - The number of molecules can be calculated using Avogadro's number, which is approximately \( 6.022 \times 10^{23} \) molecules per mole. - The number of molecules can be calculated using the formula: \( N = n \times N_A \), where \( N \) is the number of molecules, \( n \) is the amount of substance, and \( N_A \) is Avogadro's number.

Using the calculated amount of substance, we can find the number of molecules of chlorine: \[ N = 2.8125 \, \text{moles} \times 6.022 \times 10^{23} \, \text{molecules/mol} \]

The number of molecules of chlorine is approximately 1.6934375 x 10^24 molecules.

Therefore, the amount of substance of chlorine is approximately 2.8125 moles, the mass of chlorine is approximately 99.78125 grams, and the number of molecules of chlorine is approximately 1.6934375 x 10^24 molecules.