Question

Сколько молекул содержится 8 г водорода

Answer 1

N=8/2=4г/моль
N=n×N(avogadro)
N=4×6,02×10^23=24,08

Answer 2

Calculating the Number of Molecules in 8g of Hydrogen

To calculate the number of molecules in 8g of hydrogen, we can use the following steps:

1. Determine the Molar Mass of Hydrogen (H2) - The molar mass of hydrogen (H2) is 2g/mol.

2. Convert Grams to Moles - Using the molar mass of hydrogen, we can convert 8g of hydrogen to moles: - Number of moles = Mass / Molar mass - Number of moles = 8g / 2g/mol = 4 moles

3. Use Avogadro's Number to Calculate the Number of Molecules - Avogadro's number is 6.022 x 10^23 molecules/mol. - Number of molecules = Number of moles * Avogadro's number - Number of molecules = 4 moles * 6.022 x 10^23 molecules/mol - Number of molecules = 24.088 x 10^23 molecules

Therefore, there are approximately 24.088 x 10^23 molecules in 8g of hydrogen.

Conclusion

Based on the calculations, there are approximately 24.088 x 10^23 molecules in 8g of hydrogen.