Bell Beaker

Grape, G., Price, T.D., Schroter, P., Sollner, F., Johnson, C.M. and Beard, B.L. (1997). Mobility of Bell Beaker people revealed by strontium isotope ratios of tooth and bone a study of southern Bavarian skeletal remains. Applied Geochemistry 12 517-525. 

Price, T.D., Grupe, G. and Schroter, P. (1994). Reconstruction of migration patterns in the Bell Beaker period by stable strontium isotope analysis. Applied Geochemistry 9 413-417. 

Price TD, Grape G, Schroeter P (1994b) Reconstraetion of migration patterns in the Bell Beaker Period by stable strontium isotope analysis. Appl Geochem 9 413-417 Price TD, Manzanilla L, Middleton WD (2000) Immigration and the ancient city of Teotihuacan in Mexico A study using strontium isotope ratios in human bone and teeth. J Arehaeol Sci 27 903-913... 

Two beakers, one containing 0.010 m NaCl (aq) and the other containing pure water, are placed inside a bell jar and sealed. The beakers are left until the water vapor has come to equilibrium with any liquid in the container. The levels of the liquid in each beaker at the beginning of the experiment are the... 

A beaker containing 100 g of 10 0% sucrose (C12H220 ) solution and anoth containing 150 g of a 30 0% sucrose solution are put under a bell jar at 25 0°C and allowed to stand until equilibrium is attained What weight of solution will each beaker contain when equilibrium has been reached9... 

The bell is then placed in a beaker a of about 200 c.c. capacity so that the covered mouth of the bell almost touches the bottom of the beaker. Into the latter a little of the tanning solution is poured and when this has all been sucked up by the hide powder (usually in about an hour), the beaker is filled with the tanning solution and the siphon filled with the liquid by suction at its free end. The liquid flows slowly from the siphon so that the efflux of about 100 c.c. requires 1-5-2 hours. 

Figure 12-14 Effusion of gases, (a) A molecular interpretation of effusion. Molecules are in constant motion occasionally they strike the opening and escape, (b) Latex balloons were filled with the same volume of He fellow), N2 (blue), and O2 (red). Lighter molecules, such as He, effuse through the tiny pores of the latex balloons more rapidly than does N2 or O2. The silver party balloon is made of a metal-coated polymer with pores that are too small to allow rapid He effusion, (c) If a bell jar full of hydrogen is brought down over a porous cup full of air, rapidly moving hydrogen diffuses into the cup faster than the oxygen and nitrogen in the air can effuse out of the cup. This causes an increase in pressure in the cup sufficient to produce bubbles in the water in the beaker.

A beaker of water is placed under a bell jar at room temperature. A vacuum pump removes all the air from the jar and the water begins to boil. Explain why the water boils at room temperature. 

Two beakers, one containing a 50-mL aqueous 1.0 M glucose solution and the other a 50-mL aqueous 2.0 M glucose solution, are placed under a tightly sealed bell jar at room temperature. What are the volumes in these two beakers at equilibrium ... 

This solution to the problem assumes that the volume of water left in the bell jar as vapor is neghgible compared to the volumes of the solutions. It is interesting to note that at eqnilibrinm, 16.8 mL of water has been transferred from one beaker to the other. 

It is part of our common experience that a plastic beaker, when struck, emits a dull note of short duration, which is quite different from the ringing note emitted by a bell or a crystal wine glass. This property of high mechanical damping is another manifestation of viscoelasticity. It is a property that is frequently of value, for instance in shock absorbers. In plastic structures subject to forced oscillation, mechanical vibrations at the natural frequencies of the structure do not easily build up, due to the high... 

O if 3 bell jar full of hydrogen Is brought down over a porous cup full of air, rapidly moving hydrogen effuses Into the cup faster than the oxygen and nitrogen In the air can effuse out of the cup. This causes an Increase In pressure In the cup sufficient to produce bubbles In the water In the beaker. 

Initially,two beakers,each containing water solutions of the same solute,are placed under a bell jar.The solution in the left beaker is less concentrated than that in the right beaker, so its vapor pressure is greater.The partial pressure of vapor in the belljarisan intermediatevalue.lt is less than the vapor pressure of the solution on the left, but more than that of the solution on the right. As a result vapor leaves the solution on the left (which becomes more concentrated) and condenses on the solution on the right (which becomes less concentrated). After some time, the two solutions become equal in concentration and in vapor pressure. 

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