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Aurum 1 Facit Essay

5394 words - 22 pages

tKapitel 1, Grundstoffer og kemiske forbindelser
1.1 a) Ag nr 47, latin: argentum, Argentina
b) Sc nr 21, scandium, Scandia, latin for Skandinavien
Eu nr 63, europium, Europa
Am nr 95,americium, de amerikanske kontinenter
Yb nr 70, ytterbium, Ytterby i Sverige
Hf nr 72, hafnium, Hafnia latin for København
Cu nr 29, kobber, Cypern
c) Cl nr 17, chlor, græsk: gulligt – grøn
Br nr 35, brom, græsk: bromos = stank
Cr nr 24, chrom = krom, græsk: chroma = farve
P nr 15, phosphor = fosfor, græsk: phôs = lys phoros = bærende
Os nr 76, osmium, græsk osme = en lugt
Rb nr 37, rubidium, latin rubidus = mørkerød (rubiners røde farve)
d) Cm nr 96, curium, Marie og ...view middle of the document...

3 2 O3 → 3 O2 Der skal være lige mange atomer på hver side af pilen, 2∙3=3∙2=6.

1.4 Kulhydrater kan skrives som Cx(H2O)y Vand er H2O, på græsk hydor. Sukker er så C12H22O11 eller C12(H2O)11 Det består altså af kulstof og vand.

1.5 a) C18H27O3N der er 4 forskellige slagt atomer i capsaicinmolekylet
b) I alt er der 49 atomer (18 + 27 + 3 + 1)

1.6 a) svovlsyre H2SO4
b) quinin = kinin C20H24O2 N2 C20H24N2O2
c) saccharin C7H5 O3NS

1.7 a) Nitrogendioxid NO2
b) Dinitrogenoxid N2O
c) Iodtrichlorid ICl3
d) Svovltetrachlorid SCl4
e) Carbondisulfid CS2
f) Carbonmonosulfid CS
g) Tetraphosphordecaoxid P4O10

1.8 HI hydrogeniodid
NO nitrogenoxid
N2O5 dinitrogenpentaoxid
PBr3 phosphortribromid = fosfortribromid
SO3 svovltrioxid
SF6 svovlhexaflourid
P4S7 tetraphosphorheptasulfid = tetrafosforheptasulfid

1.9 a) ikke afstemt (2 O2)
b) ikke afstemt ( 2 O2 og 2 H2O )
c) er afstemt korrekt

1.10 a) H2 + Cl2 → 2 HCl
b) N2 + 3 H2 → 2 NH3
c) 2 C + O2 → 2 CO
d) CuS + 1½O2 → CuO + SO2
2 CuS + 3 O2 → 2 CuO + 2 SO2
e) 2FeS + 3½ O2 → 3 Fe2O3 + 3 SO2
4FeS + 7 O2 → 6 Fe2O3 + 6SO2
f) C3H6 + 4½ O2 → 3 CO2 + 3 H2O
2 C3H6 + 9 O2 → 6 CO2 + 6 H2O

1.11 MoS2 + 3½ O2 → MoO3 + 2 SO2
2 MoS2 + 7 O2 → 2 MoO3 + 4 SO2
MoO3 + 3 H2 → Mo + 3 H2O

1.12 Atomkernen forstørres fra 10-14 meter til 1 cm.
1 cm = 10-2 m. Atomkernen forstørres altså 1012 gange.
Hele atomet forstørres også 1012 gange, fra 10-10m til 1012 ∙10-10= 102 m
102 m = 10∙10m=100m.
Altså hele atomet ville have en diameter på 100 m, hvis kernen havde en diameter på 1 cm.

1.13

11H protium

21H deuterium

31H tritium

1.14 a) 42Ca 4220Ca 20 protoner 22 neutroner
b) 20F 209F 9 protoner 11 neutroner
c) 238U 23892U 92 protoner 146 neutroner

1.15 protoner elektroner neutroner
a) 6329Cu 29 29 34
b) 11850Sn 50 50 68
c) 12050Sn 50 50 70
d) 137Ba = 13756Ba 56 56 81
e) 138Ba = 13856Ba 56 56 82

1.16 13588Ra 13888Ra 14088Ra

1.17 42He + 168O → 2010Ne

1.18 28Ni + 83Bi → 111Rg

1.19 aflæst beregnet aflæst beregnet
Cl 35,453 Ca 40,078
Br 79,904 81,1765 Sr 87,62 88,704
I 126,90 Ba 137,33

P 30,974 Ar 39,948
As 74,922 76,367 Kr 83,798 85,619
Sb 121,76 Xe 131,29

1.20 a) Mendelejev opstillede grundstofferne efter stigende atomvægt i vertikale rækker (lodret). De horisontale (vandrette) rækker indeholder analoge grundstoffer (altså grundstoffer der reagerer kemisk ens), igen efter tiltagende atomvægt.
b) Alkalimetallerne:
Li = 7 Na = 23 K = 39 Rb = 85,4 Cs = 133
er anbragt i samme horisontale (vandrette) række efter stigende atommasse.
c) Cl, Br og I er anbragt i samme vandrette række (de reagerer altså kemisk...

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