Page 651 - SUBSEC October 2017_Neat
P. 651
- 20 -
(ii) why does the pressure decrease with increasing volume?
................................................................................................................................
................................................................................................................................
................................................................................................................................ DO NOT WRITE IN THIS AREA
................................................................................................................................
[2 marks]
(g) Given that the relative molar mass of Helium is 4.0 gmol , calculate the r.m.s. speed of the
-1
Helium molecules at the end point. (p = 200 kPa; V = 1200 cm ).
3
..............................................................................................................................................
.............................................................................................................................................
............................................................................................................................................
.............................................................................................................................................
............................................................................................................................................. DO NOT WRITE IN THIS AREA
.............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
[4 marks]
Total 30 marks
END OF TEST
IF YOU FINISH BEFORE TIME IS CALLED, CHECK YOUR WORK ON THIS TEST. DO NOT WRITE IN THIS AREA
02138020/CAPE/SPEC 2017
‘‘*’’Barcode Area”*”
Sequential Bar Code
