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Additional resources for Fundamentals of Chemistry: a Modern Introduction
277 g/liter 28 2. 10 DEVIATIONS FROM IDEAL BEHAVIOR Real gases do not behave in an ideal way. The important differences between ideal and real gases, and the consequences of these differences, are given in the following tabulation. Ideal gases Molecules have n o interacting forces Real gases Difference Molecules of gases do T h e pressure exerted by a exert forces of a t t r a c given quantity of a real tion a m o n g themselves gas in a rigid container a n d t o other m a t t e r . A at a definite result of such ture is less t h a n t h a t mutual tempera attractions is t h e for predicted b y t h e ideal m a t i o n , at any t i m e , of gas law.
31 2. Gas ther Additional Problems degrees C. Hint: extrapolate the specific volumes (reciprocals of densities) to zero volume. 13. 00 g/cm 3). 02 standard atmospheres. What is the total pressure on the diver, expressed in atmospheres? 20 g/cm 3), what would the total pressure be? 76 atm. A glass vessel is strong enough to resist implosion when it is evacuated to 1 X 1 0 -2 torr and when the outside pressure is as high as one stand ard atmosphere. By what factor must the vessel be strengthened if it is to resist evacuation to 1 X 10~9 torr at the same outside pressure?
0 m l , 7\ = 2$3°K. 5 torr = 753 torr P2 and T2 are t h e standard conditions (abbreviation sc), 760 torr a n d 273°K. 23 m l . 00 X 1 0 _1 torr? ANSWER T h i s problem is concerned with a single set of conditions, n o t with ratios between different sets. It will therefore be best to use Equation (17) directly. 00 Χ 1 0 " 4 m e f e X 0 . 0 8 2 1 ^ — - ^ — a£m~ ιτμΑ€ deg = 401°K, or 128°C. EXAMPLE 11 Using t h e data of Example 6 (page 24), calculate t h e Avogadro number. 414 liters, or one m o l e , of a gas.