Chemistry 121 Formulas and Constants (copy) (copy)

0.0(0)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Get a hint
Hint

Test me below

if ΔE > 0

Get a hint
Hint

Test me below

if ΔE > 0

Get a hint
Hint

Test this is a text

this is a second line

this is a hard line to compared

  • this is a bullet list

    • sub bullet list

    • another bullet list

  • bullet bullet

long text here for me to see if the editor is

Get a hint
Hint

this is just none sense text

this is table

head

soh

this is a quote

another author

Card Sorting

1/61

Anonymous user
Anonymous user
flashcard set

Earn XP

Description and Tags

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

62 Terms

1
New cards

Test me below

if ΔE > 0

Test me below

if ΔE > 0

2
New cards

Test this is a text

this is a second line

this is a hard line to compared

  • this is a bullet list

    • sub bullet list

    • another bullet list

  • bullet bullet

long text here for me to see if the editor is

this is just none sense text

this is table

head

soh

this is a quote

another author

3
New cards

Farenheit (F)

95(°C+32)\dfrac{9}{5}\left( °C+32\right)

4
New cards

Celsius (C)

59(°F32)\dfrac{5}{9}\left( °F-32\right)

5
New cards

Kelvin (K)

°C+273°C+273

6
New cards

Density (d)

mV\dfrac{m}{V}

7
New cards

1 amu =

1.66054×1124g1.66054\times 11^{-24}g

8
New cards

Atomic weight

Σ\Sigma [(mass)(% fractional abundance)]

9
New cards

Percentage to decimal

Divide by 100

10
New cards

Percent composition

% element =

[(# of atoms)(molecular weight)/ molar mass of the compound] x 100

11
New cards

Avogadro’s number

6.02×10236.02\times 10^{23} atoms or molecules

12
New cards

Percent yield

(actual yield/theoretical yield) x 100

13
New cards

Empirical to molecular formula

given mass of molecular formula/ molar mass of empirical formula = multiplier

14
New cards

Molarity (M)

nV\dfrac{n}{V}

15
New cards

Dilution (before and after)

M1V1=M2V2M_{1}V_{1}=M_{2}V_{2} or McVc=MdVdM_{c}V_{c}=M_{d}V_{d}

(c = concentrated, d = diluted)

16
New cards

If ΔE>0\Delta E >0

Endothermic

17
New cards

If ΔE<0\Delta E <0

Exothermic

18
New cards

Change in internal energy (ΔE\Delta E)

EfE0E_{f}-E_{0}

19
New cards

Exchange of energy betweem system and surroundings

ΔE=q+ω\Delta E=q+\omega

q = heat

w = work

20
New cards

Work

PVPV or PV-PV

P = pressure

V = volume

21
New cards

Enthalpy (H)

E+PVE+PV

22
New cards

Change in enthalpy (ΔH\Delta H)

ΔE+PΔV\Delta E+P\Delta V

23
New cards

Enthalpy of reaction

ΔHrxn=Hproducts+Hreactants\Delta H_{rxn}=H_{products}+H_{reactants}

24
New cards

Calorimetry

q=mcΔTq=mc\Delta T

25
New cards

Specific heat for H2O

4.1844.184 J/g°CJ/g°C

26
New cards

Hess’s law

ΔH=productsreactants\Delta H=\sum products-\sum reactants

27
New cards

Bond enthalpy

Σ\Sigma bonds broken - Σ\Sigma bonds formed

28
New cards

Speed of light (constant)

c=3.00×108m/sc=3.00\times 10^{8}m/s

29
New cards

Speed of light (formula)

c=λvc=\lambda v

λ\lambda = wavelength

vv = frequency

30
New cards

Energy is proportional to frequency

E=hvE=hv

hh = plank’s constant

vv = frequency

31
New cards

Plank’s constant (hh)

6.626×1034Js6.626\times 10^{-34}J\cdot s

32
New cards

Dipole moment (μ\mu)

QrQr

QQ = charge

rr = distance

33
New cards

Charge (QQ)

1.60×1019C1.60\times 10^{-19}C

CC = Coulomb

34
New cards

1 D =

3.335×1030Cm3.335\times 10^{-30}C\cdot m

35
New cards

1 A =

1010m10^{-10}m

36
New cards

Formal charge

v.e. - lines - dots

37
New cards

6

octrahedral

38
New cards

Bond order

12\dfrac{1}{2} (bonding e - antibonding e)

39
New cards

Pressure (P)

FA\dfrac{F}{A}

40
New cards

Pascals

1 Pa = 1 N/m²

41
New cards

Bar

1 bar = 105

42
New cards

Pa =

100 kPa

43
New cards

Atmosphere

1 atm = 760 torr = 760 mmHg

44
New cards

Hg =

101.325 kPa = 1.10325 bar

45
New cards

STP 1

1 atm

760 torr (mmHg)

101.325 kPa

46
New cards

Boyle’s law

P1V1=P2V2P_{1}V_{1}=P_{2}V_{2}

47
New cards

Charles’s law

V1T1=V2T2\dfrac{V_{1}}{T_{1}}=\dfrac{V_{2}}{T_{2}}

48
New cards

Gay-Lussac’s law

P1T1=P2T2\dfrac{P_{1}}{T_{1}}=\dfrac{P_{2}}{T_{2}}

49
New cards

Combined gas law

P1V1T1=P2V2T2\dfrac{P_{1}V_{1}}{T_{1}}=\dfrac{P_{2}V_{2}}{T_{2}}

50
New cards

Avogadro’s law

V1n1=V2n2\dfrac{V_{1}}{n_{1}}=\dfrac{V_{2}}{n_{2}}

51
New cards

STP 2

V = 22.4 L

T = 0°C = 273 K

P = 1 atm

52
New cards

Ideal gas law

PV=nRTPV=nRT

53
New cards

R constant

0.082060.08206 LatmmolK\dfrac{L\cdot atm}{mol\cdot K}

54
New cards

n

moles

55
New cards

M

molar mass

56
New cards

m

mass

57
New cards

Density of gases

d=MPRTd=\dfrac{MP}{RT}

58
New cards

Dalton’s law of partial pressures

Pt=P1+P2+P3P_{t}=P_{1}+P_{2}+P_{3}

59
New cards

Mole fraction

X1=n1ntX_{1}=\dfrac{n_{1}}{n_{t}}

n1n_{1} = moles of compound (part)

ntn_{t} = total mass (whole)

60
New cards

Pressure and mole fraction

Pt=X2PtP_{t}=X_{2}P_{t}

X = mole fraction

61
New cards

Urms and molecular mass

urms=3RTMu_{rms}=\sqrt{\dfrac{3RT}{M}}

R = 8.314 J/mol·K

R = 8.314 kg·m2/ s2·mol·K

62
New cards

Graham’s law describes diffusion and effusion

r1r2=M2M1\dfrac{r_{1}}{r_{2}}=\sqrt{\dfrac{M_{2}}{M_{1}}}