A miniature hot air balloon and Charles's law

Abstract

Heating the air in a tissue paper balloon using a Merker burner and flying it up and down a guided wire in the classroom.

Model‐based approach to validate the aluminium nitride material based ultrasonic MEMS transceiver for temperature sensing

“…10 depicts the rise of the temperature value decreases the air density, which means fewer particles in the air medium. It results in the drop down of receiving pressure with a decrement of air density [32]. The variation in the pressure values at the receiver surface results in the formation of voltages, which is clearly shown in Fig.…”

Using Balloons to Model Pi-Conjugated Systems and to Teach Frontier Molecular Orbital Theory

“…There have been many papers published regarding the use of balloons as an aid in teaching various chemical concepts. Examples include: Charles' Law, [2,3] Avogadro's Law, [4] molar mass, [5] and the ever-popular hydrogen balloon explosion. [6] Balloons have also been used teach VSEPR theory, [7] atomic orbitals, [8] and the modeling of organic molecules.…”

Applying Chemical Potential and Partial Pressure Concepts To Understand the Spontaneous Mixing of Helium and Air in a Helium-Inflated Balloon

“…Gases such as CO 2 (4), CH 4 (5), NH 3 (6), N 2 , and Ar (7) can be stored in a balloon. When a balloon is used as a gas reservoir in the chemistry laboratory, the composition of the gas inside is usually estimated as being equal to that of the initial composition, and diffusion of the gas is neglected (8,9). If a sample gas is collected at a specific place and moved to another place, then the inner composition of the balloon gas may have changed, as an equilibrium is reached with the air in the place of storage.…”