25cm3 of a mixture of nobel gases was obtained from air after the removal of other constituents. What was the original volume of air
-
2,500 cm3
- 1250 cm3
- 125 cm3
- 80 cm3
The correct answer is: A
Explanation
Percentage of noble gases in air is 1%25 = (1/100) * T
∴ T = 25 * 100 = 2500 cm3