About how many molecules are present in 1 cm³ of an ideal gas at STP?

1. A Option A: 6.02 × 10²³
2. B Option B: 4.46 × 10⁻⁵
3. C Option C: 2.69 × 10¹⁹
4. D Option D: 2.69 × 10²²

Answer checked 11 October 2026 · How we write and check questions