Question

Calculate the number of hydrogen molecules in 4 moles of hydrogen gas?​

Answer 1

Explanation:

The molar mass of hydrogen is 2 g/mol.

4 grams of hydrogen corresponds to 24=2  moles.

4 grams (2 moles) of hydrogen molecules contains 4 moles of hydrogen atoms.

1 mole of hydrogen atoms corresponds to 6.023×1023  atoms.

4×6.023×1023=2.40×1024  hydrogen atoms.