Question

Each molecule of hydrogen gas (H₂) is made of two hydrogen atoms. You have 6.022×10²³ molecules of hydrogen gas. How many moles of hydrogen atoms do you have.

1) 1
2) 2
3) 6
4) 12

Answer 1

You have 2 moles of hydrogen atoms when you have 6.022×10²³ molecules of hydrogen gas (H₂), as each molecule consists of 2 hydrogen atoms.

Step-by-step explanation:

The question is asking how many moles of hydrogen atoms are present in 6.022×10²³ molecules of hydrogen gas (H₂). Each molecule of H₂ contains two hydrogen atoms, so if you have 1 mole of H₂ molecules (which is 6.022×10²³ molecules), you actually have 2 moles of hydrogen atoms because each molecule contributes two atoms.

Therefore, if you have 6.022×10²³ molecules of H₂, you have:

• 6.022×10²³ molecules H₂ (1 mole H₂)
• 1 mole H₂ × 2 atoms H/molecule H₂ = 2 moles of hydrogen atoms
  

Thus, the answer is 2 moles of hydrogen atoms corresponding to option 2 in the multiple-choice question provided.