Question

Which has the maximum number of molecules among the following?

• A. \( 44 \, \text{g CO}_2 \)
• B. \( 48 \, \text{g O}_2 \)
• C. \( 8 \, \text{g H}_2 \)
• D. \( 64 \, \text{g SO}_2 \)

Hint:

The number of molecules increases as the molar mass decreases for the same given mass.

Answer 1

The Correct Option is C

The number of molecules is related to the number of moles of a substance. To compare the number of molecules in each option, we calculate the moles of each substance based on their molar masses. The substance with the least molar mass (hydrogen in this case) will have the most molecules for the given mass.

Step 2: Conclusion.
The correct answer is \( 8 \, \text{g H}_2 \), corresponding to option (c).