Question

Определите количество молекул в 50г азота

Answer 1

Ответ:

Молекулярная масса n2 равна 28 г/моль значит в 50 граммах будет 50:28=приблизительно 1.8 моля.

Answer 2

Calculation of the Number of Molecules in 50g of Nitrogen

To determine the number of molecules in 50g of nitrogen, we need to use the concept of Avogadro's number and the molar mass of nitrogen.

1. Avogadro's Number: Avogadro's number is a fundamental constant in chemistry that represents the number of particles (atoms, molecules, or ions) in one mole of a substance. It is approximately equal to 6.022 x 10^23 particles/mol.

2. Molar Mass of Nitrogen: The molar mass of nitrogen (N2) is the mass of one mole of nitrogen. It is calculated by adding up the atomic masses of the individual nitrogen atoms in the molecule. The atomic mass of nitrogen (N) is approximately 14.01 g/mol.

Now, let's calculate the number of molecules in 50g of nitrogen:

1. Calculate the number of moles of nitrogen: - Number of moles = Mass of nitrogen / Molar mass of nitrogen - Number of moles = 50g / 28.02 g/mol (since N2 has a molar mass of 28.02 g/mol) = 1.785 moles

2. Calculate the number of molecules: - Number of molecules = Number of moles x Avogadro's number - Number of molecules = 1.785 moles x 6.022 x 10^23 molecules/mol = 1.074 x 10^24 molecules

Therefore, there are approximately 1.074 x 10^24 molecules in 50g of nitrogen.

Please note that the molar mass of nitrogen (N2) and Avogadro's number are well-established scientific constants, and the calculations provided above are based on these constants.