Speed (m)
at 80″
Speed (mis)
at 20°c
Speed (m)
at 120°c
2,214
1
1,551
1,912
2
1,565
1,097
1,352
3
?
414
510
4.
553
388
478
472
CUT
5
331
407
The table shows the mean speed of the molecules of five different gases. Which value is the most
reasonable for Gas 3 at 120°C?
O A. 1,201 m/s
OB. 1,059 m/s
O C. 590 m/s
OD. 536 m/s