Question

44 gms of \( CO_2 \) contains how many molecules of \( CO_2 \)?

• A. \( 6.023 \times 10^{22} \) molecules
• B. \( 6.023 \times 10^{23} \) molecules
• C. \( 6.023 \times 10^{-23} \) molecules
• D. \( 6.023 \times 10^{-22} \) molecules

Hint:

Remember these important chemistry facts:
• \( 1 \) mole of any substance contains \( 6.023 \times 10^{23} \) particles.
• If the given mass equals the molar mass, then the substance contains exactly one mole.
• For \( CO_2 \), molar mass \( = 44 \text{ g/mol} \). Using these ideas makes molecule-based numerical problems very easy to solve quickly in competitive examinations.

Answer 1

The Correct Option is B