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Chemistry 3rd Q > 2020 Mod 11 > Flashcards

2020 Mod 11 Flashcards

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1
Q

Define pressure

A

the force per unit of area exerted on an object

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2
Q

What are the five units of pressure

A

Pa, kPa, atm, torr, mmHg

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3
Q

How many KPA equals 1.000 ATM

A

101.3 kPA

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4
Q

What does TORR and MMHG equal

A

760.0

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5
Q

What is Boyle’s law

A

PV equals constant

If the temperature stays the same the volume and pressure will also stay the same

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6
Q

Which of the laws he studied in this module it would lead to the Kelvin temperature scale

A

Charles’s law

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7
Q

What is Charles’s law

A

At constant pressure, the temperature in volume of a gas are literally proportional

V over T equals constant

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8
Q

What is the absolute temperature scale

A

It is the Kelvin temperature because we can never reach 0.00 Kelvin

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9
Q

What is extrapolation

A

Following in establish trend in data even though there’s no data available for that region

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10
Q

What general rule must a careful scientist follow when extrapolating Data

A

They must extrapolate a very little and only when the data is large enough in amount and trend

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11
Q

What temperature should we always use in every equation during this module

A

The Kelvin temperature scale

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12
Q

What are the properties of an ideal gas

A
  1. The molecules or Adams that make up the gas are very small compared to the total volume available to the gas
  2. The molecules or Adams that make up the gas must be so far apart from one another that there is no attraction or repulsion between them
  3. The collision that occurred between the gas molecules or Adams must be elastic. In other words, when the molecules or Adams collide, no energy can be lost in the collision. Also, no energy can be lost when the molecules or Adams of the gas collide with the walls of the container
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13
Q

Under what conditions to gas is behave ideally?

A

Under the standard temperature and pressure STP

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14
Q

What is STP

A

A temperature of 273 K and the pressure of 1.00 ATM

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15
Q

Under what conditions can we use all the equations in this module

A

When a gas has a temperature that is close to or larger than 273K and the pressure that is near or lower than 1.00 ATM. Then the gas will behave in an ideal fashion

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16
Q

What is Dalton’s law of partial pressures

A

Went two or more ideal glasses are mixed together the total pressure of the mixture is equal to the sum of pressures of each individual gas

17
Q

Does the pressure of an ideal gas depend on the identity of the gas? If not what does it depend on?

A

The pressure of an ideal gas does not depend on the identity of the gas. It depends on the quantity of the gas

18
Q

Vapor pressure

A

The pressure exerted by the vapor that sit on top of any liquid

19
Q

What is a general rule that is correlated with vapor pressure

A

The vapor pressure of any liquid increases with increasing temperature

20
Q

What is boiling point

A

The temperature at which the vapor pressure of a liquid is equal to normal atmospheric pressure

21
Q

What is mole fraction

A

X equals number of moles of compound over total number of moles in the mixture

22
Q

What is a dimension less quantity

A

Hey quantity with no units

23
Q

The ideal gas law equals

A

PV=nRT

24
Q

What does R equal

A

R = 0.0821 L • ATM over moles • K

25
Q

Two steel containers of equal value contain two different gases at the same temperature. The first container on 1.3 miles of into gas, and the second contains 1.3 miles of S03 gas. Compare the pressures of the two containers

A

P1 equals P2

26
Q

A liquid temperature is lowered from 50° C to 10° C. Did the liquid vapor pressure increase, decrease, or stay the same during that time

A

It decreased

27
Q

The mall fraction of nitrogen gas is compressed air is 0.78. If you have 1000 miles of compressed air how many will be nitrogen molecules?

A

780 equals N2

28
Q

What does one ATM in torr equal

A

760

Chemistry 3rd Q (4 decks)

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