Lesson 4. Physical Quantities

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58 Terms

1
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L

Fundamental Dimensions

  • symbol of length

2
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cm

Fundamental Dimensions

  • CGS unit of length

3
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m

Fundamental Dimensions

  • SI unit of length

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M

Fundamental Dimensions

  • symbol of mass

5
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g

Fundamental Dimensions

  • CGS unit of mass

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kg

Fundamental Dimensions

  • SI unit of mass

7
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T

Fundamental Dimensions

  • symbol of time

8
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s

Fundamental Dimensions

  • CGS unit of time

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s

Fundamental Dimensions

  • SI unit of time

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L^2

Derived Dimensions

  • symbol of area

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cm^2

Derived Dimensions

  • CGS unit of area

12
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m^2

Derived Dimensions

  • SI unit of area

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L^3

Derived Dimensions

  • symbol of volume

14
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cm^3

Derived Dimensions

  • CGS unit of volume

15
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m^3

Derived Dimensions

  • SI unit of volume

16
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ML^-3

Derived Dimensions

  • symbol of density

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g/cm^3

Derived Dimensions

  • CGS unit of density

18
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kg/m^3

Derived Dimensions

  • SI unit of density

19
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LT^-1

Derived Dimensions

  • symbol of velocity

20
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cm/s

Derived Dimensions

  • CGS unit of velocity

21
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m/s

Derived Dimensions

  • SI unit of velocity

22
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LT^-2

symbol of acceleration

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cm/s^2

Derived Dimensions

  • CGS unit of acceleration

24
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m/s^2

Derived Dimensions

  • SI unit of acceleration

25
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MLT^-2

Derived Dimensions

  • Symbol of Force

26
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gcm/s² or dyne

Derived Dimensions

  • CGS unit of force

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kgm/s^2 or N

Derived Dimensions

  • SI unit of force

28
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ML^-1T^-2

Derived Dimensions

  • symbol of pressure

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g/cms^2 or dyne/cm^2

Derived Dimensions

  • CGS unit of pressure

30
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kg/ms^2

Derived Dimensions

  • SI unit of pressure

31
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MT^-2

Derived Dimensions

  • symbol of surface tension

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g/s² or dyne/cm

CGS unit of surface tension

33
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kg/s^2 or N/m

Derived Dimensions

  • SI unit of surface tension

34
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ML^2T^-2

Derived Dimensions

  • symbol of energy

35
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gcm^2/s^2 or dynecm

Derived Dimensions

  • CGS unit of energy

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kg m^2/s^2 or Nm

Derived Dimensions

  • SI unit of energy

37
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760

1 atm =

a. ______ mmHg

b. ______ cmHg

c. ______ torr

d. ______ dynes/cm^2

e. ______ N/m^2

f. ______ bar

a = ?

38
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76

1 atm =

a. ______ mmHg

b. ______ cmHg

c. ______ torr

d. ______ dynes/cm^2

e. ______ N/m^2

f. ______ bar

b = ?

39
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760

1 atm =

a. ______ mmHg

b. ______ cmHg

c. ______ torr

d. ______ dynes/cm^2

e. ______ N/m^2

f. ______ bar

c = ?

40
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1.01325 x 10^6

1 atm =

a. ______ mmHg

b. ______ cmHg

c. ______ torr

d. ______ dynes/cm^2

e. ______ N/m^2

f. ______ bar

d = ?

41
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1.01325 x 10^5

1 atm =

a. ______ mmHg

b. ______ cmHg

c. ______ torr

d. ______ dynes/cm^2

e. ______ N/m^2

f. ______ bar

e = ?

42
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1.01325

1 atm =

a. ______ mmHg

b. ______ cmHg

c. ______ torr

d. ______ dynes/cm^2

e. ______ N/m^2

f. ______ bar

f = ?

43
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Solutions

chemically and physically homogeneous mixture of two or more substances

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Solutions of particular pharmaceutical importance

gases in liquids,liquids in liquids, solids in liquids

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Molarity

  • temperature-dependent

  • moles of solute in 1L of solution

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Normality

  • temperature-dependent

  • equivalents of solute in 1L of solution

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Molality

  • temperature-independent

  • moles of solute in 1000 g (1 kg) of solvent

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Mole Fraction

  • ratio of moles of one constituent of a solution to the total moles of all constituents

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Mole percent

  • moles of one constituent in 100 moles of the solution

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Percent by weight

  • temperature-independent

  • grams of solute in 100 g of solution

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Percent by volume

  • temperature-dependent

  • milliliters of solute in 100 mL of solution

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Percent weight in volume

  • temperature dependent

  • milligrams of solute in 100 mL of solution

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milligrams per deciliter

  • temperature-dependent

    • milligrams of solute in 100 mL of solution

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Osmolality

  • temperature independent

  • mass of solute that when dissolved in 1 kg of water, will exert an osmotic pressure equal to that exerted by a gram molecular weight of an ideal unionized substance dissolved in 1 kg of water

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Osmorality

  • temperature dependent

  • mass of solute that when dissolved in 1L of solution, will exert an osmotic pressure equal to that exerted by a gram molecular weight of an ideal unionized substance dissolved in 1L of solution

56
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Solutions of Nonelectorlytes

  • In nonaqueous media behave as ideal solution

  • In aqueous media: do not conduct current, no ions present, and exhibit regular colligative properties

  • ex: sugar, alcohol, acetamide, acetone, glycerin

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Solutions of Strong Electrolytes

  • In nonaqueous media for ion pairs

  • In aqueous media: Conduct strong current, totally ionized, and exhibit irregular colligative properties

  • ex: mineral acids, strong bases, all salts

58
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Solutions of Weak Electrolytes:

  • in nonaqueous media behave as ideal solution

  • in aqueous media: weak current, partially ionized, colligative properties based on ionization

  • ex: weak acids, weak bases, HOAc, NH4OH, benzoic acid, atropine