Textbook Ch.5: Gases

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

What units can volumes of gases be expressed in?

Back (Answer)

L, cm³, mL³

Front (Question)

How can the number of moles be related to mass in grams and molar mass?

Back (Answer)

n = number of moles m = mass in grams MM = molar mass n = m/MM

Front (Question)

How is the temperature of a gas ordinarily measured using a thermometer?

Back (Answer)

in degrees celsius °C

Front (Question)

How must you express temperatures of gases when you are doing any calculations involving the physical behavior of gases?

Back (Answer)

using the Kelvin scale

Front (Question)

What relation can be used to convert between °C and K?

Back (Answer)

Tₖ = T꜀ + 273 Celsius –> kelvin (take your value and add 273) Kelvin –> celsius (take your value and subtract 273)

Front (Question)

Pressure

Back (Answer)

force per unit of area

Front (Question)

Pai

Back (Answer)

a unit of pressure “pounds for square inch”

Front (Question)

Barometers and manometers

Back (Answer)

devices commonly used to measure atmospheric pressure using mercury

Front (Question)

Millimeters of mercury (mm Hg)

Back (Answer)

a unit for measuring pressure

#10

Front (Question)

Atmosphere (atm)

Back (Answer)

a unit for measuring pressure

#11

Front (Question)

Pascal (Pa)

Back (Answer)

a standard unit of pressure

#12

Front (Question)

Bar

Back (Answer)

10⁵ pascals

#13

Front (Question)

Relate bars, to atm, to mm Hg, to psi, to Pa

Back (Answer)

1.013 bar = 1 atm = 760 mmHg = 14.7 psi = 100 kPa

#14

Front (Question)

Relate temperature, volume, number of particles/amount, and pressure of gases

Back (Answer)

• Volume is directly proportional to amount • Volume is directly proportional to absolute temperature (Kelvin scale!) • Volume is inversely proportional to pressure

#15

Front (Question)

Ideal gas law

Back (Answer)

PV = nRT P = pressure V = volume n = number of moles T = temperature on the Kelvin scale R = a constant

#16

Front (Question)

What is the value of R in gas law problems?

Back (Answer)

0.0821 latm / molk

#17

Front (Question)

What is the value of R in equations involving energy in joules?

Back (Answer)

8.31 J / mol*k

#18

Front (Question)

What is the value of R in the calculation of molecular speed?

Back (Answer)

8.31 * 10³ gm^2 / s^2mol*K

#19

Front (Question)

Standard temperature and pressure (STP)

Back (Answer)

0°C and 1 atm

#20

Front (Question)

What is the relationship between final and initial state for pressure and temperature?

Back (Answer)

P2/P1 = T2/T1

#21

Front (Question)

The density of a gas is dependent on:

Back (Answer)

• pressure • temperature • molar mass

#22

Front (Question)

The ___ ratio of any two gases in a reaction at a constant temperature and pressure is the same as the ___ ratio

Back (Answer)

volume ratio is the same as the mole ratio

#23

Front (Question)

Partial pressures

Back (Answer)

Ptot = nA*(RT/V) + nB pressures certain gases would exert if they were alone

#24

Front (Question)

Dalton’s law

Back (Answer)

the total pressure of a gas mixture is the sum of the partial pressures of the components of the mixture