
Víz, levegő számítások - gyakorló
Authored by Erzsébet Dóka
Chemistry
8th Grade
Used 6+ times

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10 questions
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1.
OPEN ENDED QUESTION
1 min • 2 pts
Hány darab elektron van egy darab szén-dioxid (CO2) molekulában?
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Answer explanation
22
2.
OPEN ENDED QUESTION
1 min • 2 pts
Hány darab proton van egy darab nitrogén molekulában (N2)?
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Answer explanation
14
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hány elektronhéja van az oxigénnek?
1
2
3
4.
OPEN ENDED QUESTION
1 min • 2 pts
Mekkora az anyagmennyisége 3 ∙ 1024 db vízmolekulának?
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Answer explanation
5 mol
5.
OPEN ENDED QUESTION
1 min • 5 pts
Mekkora a tömege 1,5 ∙ 1023 oxigénmolekulának?
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Answer explanation
8 g
6.
OPEN ENDED QUESTION
1 min • 2 pts
Hány darab atomot tartalmaz egy 27 g tömegű alumíniumkocka?
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Answer explanation
6x1023
7.
OPEN ENDED QUESTION
2 mins • 5 pts
Hány db atomot tartalmaz egy 2 cm élhosszúságú alumíniumkocka (ρ(Al) = 2,7 g/cm3)?
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Answer explanation
1,8x1023
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