Ar i Mr

Ar i Mr

7th Grade

7 Qs

quiz-placeholder

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Ar i Mr

Ar i Mr

Assessment

Quiz

Chemistry

7th Grade

Practice Problem

Hard

Created by

Danijela Gligorić

Used 27+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ar od CO je:

28

14

56

196

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

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

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