1. Determine the molar mass of hydrogen:
* Hydrogen (H₂) has a molar mass of approximately 2 grams per mole (g/mol). This is because each hydrogen molecule consists of two hydrogen atoms, and each atom has a molar mass of approximately 1 g/mol.
2. Convert grams to moles:
* Divide the mass of hydrogen (1 gram) by its molar mass (2 g/mol):
1 g / 2 g/mol = 0.5 moles
3. Use Avogadro's number:
* Avogadro's number states that there are 6.022 x 10²³ particles (atoms, molecules, etc.) in one mole of any substance.
* Multiply the number of moles (0.5 moles) by Avogadro's number:
0.5 moles * 6.022 x 10²³ molecules/mole = 3.011 x 10²³ molecules
Therefore, there are approximately 3.011 x 10²³ hydrogen molecules present in one gram of hydrogen.
