Jika massa satu atom alumunium adalah 26,98 sma, maka nilai Ar alumunium adalah

Asesmen Formatif Kimia (Konsep Mol : massa Atom Relatif)

Quiz
•
Chemistry
•
10th Grade
•
Easy
Maulida iftina
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
13,49
12
26,98.
27,12
13,00
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apa arti dari satu satuan massa atom (sma)?
Massa 1 molekul
1/12 massa atom C-12.
Massa total unsur
12 gram
Massa 1 mol atom C
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Atom natrium memiliki massa 23 kali lebih besar dari 1/12 massa atom C-12. Maka Ar natrium adalah
24
11,5
12
23.
46
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika massa atom belerang adalah 32 sma, maka nilai massa atom relatifnya adalah
16
12
28
32.
35
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu atom memiliki nomor massa 39 sma. Unsur apakah yang memiliki massa atom 39 sma?
Na
Ne
Ca
K.
Al
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Unsur klor memiliki dua isotop: Cl-35 (75%) dan Cl-37 (25%). Maka massa atom relatifnya adalah...
36
35
37
35,5.
34,5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mengapa isotop yang lebih melimpah lebih memengaruhi nilai Ar suatu unsur?
Karena lebih ringan
Karena lebih reaktif
Karena merupakan rata-rata tertimbang.
Karena stabil
Karena bentuknya lebih umum
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