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Chem30S > Gas Unit > Flashcards

Gas Unit Flashcards

1
Q

Boyle’s law?

A

P1V1=P2V2

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2
Q

Charles Law

A

V1/T1=V2/T2

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3
Q

Gay Lussac

A

P1T1=P2T2

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4
Q

Avogadro

A

V1/n1=V2/n2

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5
Q

Who invented the classical barometer?

A

Torricelli

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6
Q

How can atmospheric pressure be measured?

A

With a barometer

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7
Q

Explain the mercury barometer work?

A

The height of mercury indicated the pressure. Patm was measured in millimetres of Hg

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8
Q

The different atmospheric pressure units?

A 
1 atm
760 mmHg
760 Torr
14.7 psi
101.3 kPa
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9
Q

How to measure trapped gas?

A

Manometer

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10
Q

Formula for reading manometer

A

Pgas = Patm +/- delta height

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11
Q

Combined Gas Law

A

P1V1/T1n1=P2V2/T2n2

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12
Q

STP

A

Ts=273.15K

Ps=1.00 atm

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13
Q

Ideal Gas Constant

A

0.0820

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14
Q

Ideal Gas Law

A

PV=nRT

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15
Q

Air’s mass?

A

1g in 1000 mL

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16
Q

How high can the atmosphere hold water?

A

10.34m

17
Q

What device did Boyle use?

A

A J-shaped tube (manometer)

18
Q

How does Cartesian diver work?

A

The pressure shrinks the volume of air in the diver… thus the diver gets heavier, denser, and sinks

19
Q

Avogadro’s Hypothesis: ________

A

(1811)

At a constant temperature and pressure equal volumes of gas have the same number of particles, regardless of type

20
Q

How did they come up with the mol number?

A

So that the atomic mass number is the same as the mass, in grams, of 1 mile of atoms of that element

21
Q

Standard set

A

P: 1.00 atm
V: 22.4 L
T: 273.15K
n: 1 mol

22
Q

STP stands for

A

Standard Temperature and Pressure

23
Q

SATP stands for

A

Standard Ambient Temperature and Pressure

24
Q

NTP stands

A

Normal Temperature and Pressure

25
Q

The law that states that at a constant volume, the pressure of a fixed mass of any gas is directlyproportional to its Kelvin temperature is…

A

Boyles laws

26
Q

How is ‘absolute zero’ defined in chemistry, and what is its significance regarding gases?

A

When there is absolutely no Kinetic energy present. Any gas at this temperature would have zerovolume if it remained a gas

27
Q

Who was the first scientist to use the scientific process to find the relationships between the variables of a gas?

A

Robert Boyle

28
Q

Boyle’s Law states that:

A

The pressure exerted by a given mass of a gas at constant temperature is inversely proportional to the volume occupied by the gas

29
Q

What is the molar volume of a gas at STP?

A

22.4 L

30
Q

How many particles are there in one mole?

A

6.02 x 10^23 particles

31
Q

Why is the mole so important in chemistry?

A

The mole was created by Amades Avogadro. It is a counting number, like pairs, dozens, or reams. It is a very large counting number to count particles. It’s value is 6.02x10^23. The number was chosen so that an element’s atomic mass would be the same as its mass in g/mol.

Chem30S (4 decks)

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