
Ar i Mr
Authored by Danijela Gligorić
Chemistry
7th Grade
Used 27+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Ar od CO je:
28
14
56
196
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Na slici je prikazan molekul jednog od oblika ugljenika (bakminsterfuleren). Ako je Mr=720, odredi od koliko se atoma sastoji ovaj molekul.
10
60
120
30
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mr za S8 je:
256
128
64
8
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mr za CaCl2 je:
75.5
100
54
111
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Al(NO3)3 ima Mr:
426
213
106.5
89
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Plavi kamen se koristi za daezinfekciju vode u bazenima, kao i i u voćarstvu za zaštitu bilja. Njegova formula je CuSO4 x 5H2O, možemo izračunati da Mr iznosi:
249.5
14355
159.5
177.5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Ar često nije ceo broj jer se elementi u prirodi javljaju u više:
izobara
izotopa
alotropskih modifikacija
katalizatora
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