Balloon party

There was a birthday party going on around us. It was the D.J. Bill Coleman s birthday. Balloons bobbed the blond-wood ceiling. Seventies and eighties music bobbed the crowd—late Diana Ross ( Upside Down ), KC and the Sunshine Band and other bands from the uh huh uh huh or ow ow ow ow era. Disco still has a desperate edge to it to hear—the Studio 54 into Xenon years when AIDS worked the party and only insiders knew it was there, like a VIP room celebrity, or how to meet it. Disco still sells sex, too, like cocktails, even when you re packing rubber. 

The pressure inside a party balloon is higher than the external, atmospheric pressure, as evidenced by the way it whizzes around a room when punctured. 

SAQ 3.6 What is the work done when the gas from a party balloon is released Assume the inflated balloon has a volume of 2 dm3, and a volume of 10 cm3 when deflated. Assume there is no pressure change, so p = pe. 

GB> A balloon at a party drifts above a hot stove, and explodes. Why did this happen ... 

Sandra is having a birthday party on a mild winter s day. The weather changes and a higher-pressure (103.0 kPa) cold front (-25°C) rushes into town. The original air temperature was -2°C and the pressure was 100.8 kPa. What will happen to the volume of the 4.2 L balloons that were tied to the front of the house ... 

A 25 g sample of dry air in a large party balloon at 20°C occupies a volume of 20 L. If the temperature is increased to 40°C at constant pressure, how large will the balloon become ... 

You probably have noticed that balloons inflated with helium gas rise in the air the first day during a party bul they fall down the next day and act like ordinary balloons filled with air. This is because the helium in the balloon slowly leaks out through the wall while air leaks in by diffusion. 

For instance, helium, neon, and argon each have filled shells, and this vertical column is commonly called the noble gases because of their dignified, inert, unreactive nature. Their lack of chemical reactivity is typified by helium, which is so unreactive that we use helium balloons for decorations at parties. Hydrogen, on the other hand, is very reactive. Hydrogen balloons at a party might result in entertainment more explosive than we would care for. 

Party balloons are often filled with helium. IMAGE COPYRIGHT 2009, HFNG. USED UNDER LICENSE FROM SHUTTERSTOCK. 

Helium gas, used in party balloons, is heavier than hydrogen gas but safer because it is unreactive and will not burn as hydrogen does. 

A party balloon contains 5.50 X 10 atoms of helium (He) gas. What is the mass in grams of the helium ... 

A party balloon was filled with 9.80 X 10 atoms of helium. After 24 hours, 45% of the helium had escaped. How many atoms of helium remained ... 

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.

Atoms-to-Mass Conversion Helium (He) is an unreactive noble gas often found in underground deposits mixed with methane. The mixture is separated by cooling the gaseous mixture until all but the helium has liquefied. A party balloon contains 5.50 X 10 atoms of helium gas. What is the mass, in grams, of the helium ... 

Prodncts and Uses Used for welding, balloon inflation (weather, research, party), diver s breathing equipment, and inflated advertising signs. 

Most of us are familiar with the element helium. It is the very light gas used to inflate party balloons and make them float. Blimps are also filled wifh helium. 

If you bring home a party balloon filled with helium, obviously unless the balloon is a perfect barrier, over time helium will diffuse out of the balloon. Will any gases diffuse into the balloon while the helium is diffusing out Why or why not ... 

The next room of the aerarium is labeled the Compartimento Aroma-tico, where the party finds a balloon labeled "benzene." They look in. 

Helium comes from the emission of alpha particles during radioactive decay, some of these radioactive particles from all the way from the sun to make helium. (Next time you hold a floating party balloon just remember how far that helium traveled all the way from the Sun ) Radon, on the other hand, is formed by the decay of radium and uranium and all isotopes of radon are radioactive. 

Mylar balloons add zest to a party and because they are PETE can be recycled. 

A cylinder containing 15.0 L of helium gas at a pressure of 165 atm is to be used to fill party balloons. Each balloon must be filled to a volume of 2.0 L at a pressure of 1.1 atm. What is the maximum number of balloons that can be inflated Assume that the gas in the cyUnder is at the same temperature as the inflated balloons. (HINT The empty cylinder will still contain hehum at 1.1 atm.)... 

The thin, shiny insulation material used extensively in the Mars rover missions—a strong lightweight plastic, vacuum-metallized film that minimizes weight impact on vehicle payload while also protecting spacecraft, equipment, and personnel from the extreme temperature fluctuations of space— is found in applications ranging from reflective thermal blankets to party balloons. 

O Lstex balloons were tilled with the same volume of He (yellmi/), N2 (A/ue), and O2 (red). The lighter He molecules effuse fhrough fhe finy pores of fhe lafex balloons more rapidly fhan does N2 or O2. The silver party balloon is made of a mefal-coafed polymer wifh pores fhaf are foo small fo allow rapid He effusion. 

---