In this animated object, learners examine the mechanisms for gas exchange among the lungs, blood, and tissues.

Learners calculate gas density from the standard molar volume and observe how the density increases with the increasing molecular weight of the gas.

In this animated object, learners examine how gas volume varies directly with absolute temperature (K at constant pressure). An example of a sample of gas at two conditions of volume and temperature is used to illustrate the law.

Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.

In this brief object, learners examine the direct relationship between the volume of a gas sample and the number of moles of gas. A problem is presented so students can test their knowledge of Avogadro's Law.

Learners study how a hydrocarbon gas sensor operates and why it is used. A short quiz completes the activity.

Students read an explanation of the values used for arterial blood gas analysis.

In this learning activity you'll calculate exchange rates to determine the impact of prices of exports and imports.

Learners examine the theory of operation for a combustible gas detector. A brief quiz completes the activity.

The learner will understand proper safe handling and installation procedures for shielding gas cylinders.

In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.

Learners combine Boyle's Law and Charles's Law to solve for the pressure, volume, and temperature of a gas sample under two sets of conditions.

In this interactive object, learners use the ideal gas law to solve a practice problem.

In this animated activity, learners compare the van der Waals equation with the Ideal Gas Law.

In this animated activity, learners examine what gases are composed of and how their particles interact. They also consider several assumptions that form the basis for the Kinetic Theory of Gases.

In this interactive object, the learner reads an explanation of how various shielding gases are used in GMAW and FCAW. An exercise completes the activity.

Learners examine how CEC, base saturation, and soil pH work with each other to define plant nutrient availability.

Learners view wire feed power sources ranging from 110-volt, single phase units to 460-volt, three-phase units. A description and photos of each are provided.

Learners convert units used to designate pressure. Units for pressure are atm, mm Hg, torr, and pascal.

Learners match gastrointestinal system drug actions to the appropriate drug category.