52. The radius of an atom of He is 0.05 nm. Assuming that one mole of a gas occupies 22.4 litres at STP, the fraction of the volume occupied by the atoms in a mole of He gas at STP is: A. 1.4 × 10−4. B. 1.4 × 10−5. C. 7.1 × 10−4. D. 7.1 × 10−5.

52. The radius of an atom of He is 0.05 nm. Assuming that one mole of

1.	52. The radius of an atom of He is 0.05 nm. Assuming that one mole of a gas occupies 22.4 litres at STP, the fraction of the volume occupied by the atoms in a mole of He gas at STP is: A. 1.4 × 10−4. B. 1.4 × 10−5. C. 7.1 × 10−4. D. 7.1 × 10−5.
Answer» 52. The radius of an atom of He is 0.05 nm. Assuming that one mole of a gas occupies 22.4 litres at STP, the fraction of the volume occupied by the atoms in a mole of He gas at STP is: A. 1.4 × 10−4. B. 1.4 × 10−5. C. 7.1 × 10−4. D. 7.1 × 10−5.