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Kemijske reakcije i mol

Authored by lidija vojvodic

Science

2nd Grade

Kemijske reakcije i mol
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koja je mjerna jedinica za količinu tvari u kemijskim reakcijama?

Kilogram (kg)

Mol (M)

Centimetar (cm)

Sekunda (s)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koliko iznosi Avogadrov broj?

3.145 x 10^22

7.891 x 10^25

5.432 x 10^21

6.022 x 10^23

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koliko milimola dušikove kiseline sadrži isti broj molekula kao i milimol kalcijeva bikarbonata?

4

3

2

1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koliko milimola dušične kiseline je potrebno u reakciji 2HNO3 + Ca(HCO3)2?

1

2

3

4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koja je molekulska masa dušikove kiseline?

63

45

52

78

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