A Level Homework and Answers
This blog contains answers to exercises set for students. While every effort is made to ensure that the information posted is correct, mistakes may occur from time to time.
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Gas Laws
Gas Laws
- A gas has a volume of 600 cm3
at a temperature of 270 C and a pressure of 1 atmosphere. Find
its volume at a temperature of 1270C and a pressure of 2
atmospheres.400 cm3
- A fixed mass of gas at constant
pressure has a volume of 576 cm3 at 15°C. Find its volume (a)
at 00C, (b) at 1000C.456,746
- A fixed mass of gas at constant
pressure has a volume of 600 cm3 at 0°C. At what
temperature will its volume be (a) 400 cm3, (b) 1200 cm3? -91 273
- A uniform glass tube, sealed at
one end, contains a column of air trapped by a small pellet of mercury.
The length of the air column is 145 mm at 17°C. Calculate (a)
the length of the air column at 47°C, (b) the temperature at
which the air column is 132 mm long. 160 -9
- A fixed mass of gas exerts a
pressure of 715 mmHg at 13°C. If its volume is kept constant, calculate
the pressure exerted at (a) 0°C, (b) 100 °C. 682.5
932.5
- How could you make a gas (a)
hotter (b) cooler without supplying
or extracting heat energy? Explain why your methods work.
- A
gas at a temperature of 27 °C occupies a volume of 500 cm3 at a
pressure of 102 000 Pa. If its temperature increases to 127 °C,
and its volume to 850 cm', what is the new pressure? 80000
- A gas at a temperature of 12°C
occupies 722.0 cm 3 at a pressure of 750 mmHg. Find its volume
at s.t.p. (00C, 760 mm of Hg) 682.5
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