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MCAT > Gen Chem > Flashcards

Gen Chem Flashcards

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MCAT flashcards
1
Q

Liters to gallons

A

3.79L = 1 gallon

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2
Q

Liters to quarts

A

1L = 1.06 qt

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3
Q

kg to lbs

A

1 kg = 2.205 lbs

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4
Q

grams to lbs

A

453.6g = 1 lbs

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5
Q

Temp F to C

A

F=9/5C+32

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6
Q

Temp C to F

A

C= 5/9(F-32)

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7
Q

specific gravity

A

density of a material relative to density of water

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8
Q

Molarity

A

mol solute/ L solution

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9
Q

empirical formula

A

smallest whole number ratio of atoms in a compound

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10
Q

hydrocarbons cannot have

A

an odd number of hydrogens

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11
Q

Molality

A

mol solute / kg solvent

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12
Q

mass percent

A

g solute / g solution

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13
Q

Density varies with

A

Temperature

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14
Q

Dilution formula

A

M1V1=M2V2

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15
Q

Folds refers to

A

Multiple of original volume

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16
Q

Parts refers to

A

Volume added to original volume

17
Q

Concentration is proportional to

A

Absorbance

18
Q

Lower pKa indicates

A

A stronger acid

19
Q

Volume of ideal gas at STP

A

22.4 L/mol

20
Q

Absorbance calculation

A

Abs1V1=Abs2V2

21
Q

Molality

A

Mol solute / kg solvent

22
Q

enthalpy equation

A

deltaH= energy of bonds broken - energy of bonds formed

23
Q

increase in bond dissociation energy also increases

A

bond strength

24
Q

e- withdrawing groups

A

cause higher acidity and lower pka

25
Q

most electronegative atom

A

fluorine

26
Q

inductive effect definition

A

e- density is pulled toward the most electronegative atom

27
Q

electronegativity order

A

Fonclbrisch

28
Q

fluidity decreases with

A

saturation

29
Q

best nucleophile has the least

A

inductive withdraw

30
Q

lower delta H =

A

more stable bond

31
Q

nitrate formula

A

NO3

32
Q

carbonate formula

A

CO3

33
Q

Effective nuclear charge — across a row on the periodic table

A

increases

34
Q

electron affinity measures the

A

tendency of an atom to gain an e-

35
Q

more negative electron affinity =

A

greater e- affinity

36
Q

reduction refers to

A

the gain of an e-

37
Q

dipole moment refers to

A

degree of e- sharing between 2 atoms in a bond

38
Q

electronegativity increases –

A

up the table, b/c number of e- in the shell decreases, therefore less between other atom and that atoms nucleus

MCAT (5 decks)

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