# Chapter 14 Chemistry Vocab

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Mr. Wells

### ideal gas constant

8.31 (L KPA)/(Kmol)

### Boyles Law

For a given mass of gas at constant temperature, the volume of gas varies inversly with pressure

### Dalton's Law of partial pressures

At constant volume and temperature,the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the component gases

p v = n R * T

### Combined gas law

(p1 v1)/(t1) = (p2 v2)/(t2)

### Charles law

the volume of a fixed mass of gass is directly proportional to the Kelvin temperature if the volume is kept constant

### diffusion

a gas tends to move to an area of lower concentration until the concentration is uniform throughout

### partial pressure

the contribution each gas in a mixtur makes to the total pressure

### effusion

a gas escapes through a tiny hole in its container

### Grahams law

the rate of effusion of a gas is directly proportional to the square root of the gas's molar mass.

### Compressability

a measure of how much volume of matter decreases under pressure

Example: