NEET-XII-Physics
24: Kinetic Theory of Gases
- #2Find the number of molecules of an ideal gas in a volume of 1.000 cm3 at STP.Ans : Here,
Volume of ideal gas at STP = 22.4 L
Number of molecules in 22.4 L of ideal gas at STP = 6.022`` \times ``1023
Number of molecules in 22.4​`` \times ``103 cm3 of ideal gas at STP = ​6.022`` \times ``1023
Now,
Number of molecules in 1 cm3 of ideal gas at STP = `` \frac{6.022\times {10}^{23}}{22.4\times {10}^{3}}=2.688\times {10}^{19}``