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Gases Flashcards

1
Q

percent composition of nitrogen in the atmosphere

A

78%

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2
Q

percent composition of oxygen in the atmosphere

A

21%

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3
Q

percent composition of other gases in the atmosphere

A

1%

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4
Q

name all the gases at occurs as diatomic molecules

A

hydrogen
chlorine
fluorine
oxygen
nitrogen

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5
Q

TRUE or FALSE
noble gases are monoatomic gases

A

TRUE

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6
Q

differentiate gas and vapor

A

gas is a substance that is gaseous at ordinary temperatures and pressures, while vapor is the gaseous form of a substance that is usually a liquid or solid under those conditions

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7
Q

what is atmospheric pressure

A

force exerted by the weight of the air above us, which decreases with altitude and fluctuates with weather conditions

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8
Q

what is Standard Atmospheric Pressure

A

is the pressure that supports a column of mercury at exactly 760 mm (76 cm) high at 0 degrees Celsius at sea level, equivalent to 1 atm or 101.3 kPa

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9
Q

standard pressure

A

1 bar

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10
Q

standard temperature

A

273.15 K

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11
Q

1 atm to torr

A

760 torr

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12
Q

1 atm to mmHg (millimeter mercury)

A

760 mmHg

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13
Q

1 atm to Pa (pascal)

A

101325 Pa

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14
Q

1 atm to bar

A
  1. 01325 bar
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15
Q

Boyle’s Law relationship and formula

A

Pressure-Volume
the pressure of a fixed amount of gas at a constant temperature is inversely proportional to the volume of the gas
P1V1=P2V2

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16
Q

Charles’s Law relationship and formula

A

Temperature-Volume
volume of a fixed amount of gas maintained at a constant pressure is directly proportional to the absolute temperature of the gas
V1/T1=V2/T2

17
Q

Gay-Lussac’s Law relationship and formula

A

Temperature-Pressure
pressure of a gas is proportional to temperature
P1/T1=P2T2

18
Q

Avogadro’s Law relationship and formula

A

Volume- Amount
at constant pressure and temperature, the volume of a gas is directly proportional to the number of moles of the gas present
V1/n1=V2/n2

19
Q

Ideal Gas Equation relationship and formula

A

ideal gas is a hypothetical gas whose pressure-volume-temperature behavior can be completely accounted for by the ideal gas equation
PV=nRT
R- proportionality constant (gas constant)

20
Q

1 mole of an ideal gas occupies how many liters

21
Q

R constant/ gas constant

A

0.0821L atm/K mol

22
Q

Combined Gas Law formula

A

P1V1/T1= P2V2/T2

23
Q

the n in the Ideal Gas Equation can equate to ____, which can be used to acquire the density using the equation

A

mass/molar mass

CHEM BRIDGING (4 decks)

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