Massa Atom & Molekul Relatif

Massa Atom & Molekul Relatif

10th - 12th Grade

30 Qs

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Massa Atom & Molekul Relatif

Massa Atom & Molekul Relatif

Assessment

Quiz

Chemistry

10th - 12th Grade

Medium

Created by

Abdullah Rizky

Used 2+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

1. Jika diketahui massa atom unsur Fe = 55,847 sma dan massa 1 atom C-12 = 12,000 sma. Berapakah massa atom relatif Fe ?

55,846 sma

55,846 gram

55,847 gram

55,847 sma

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

1. Jika diketahui massa atom relatif (Ar) dari atom B adalah 36 dan massa 1 atom 12C adalah 12 sma. Tentukan massa rata-rata 1 atom B dalam satuan sma ?

37 sma

35,5 sma

36 sma

35 sma

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

1. Jika diketahui Ar Fe =56 sma dan massa atom 12C = 2 x 10-23. Tentukanlah massa rata-rata 10 atom besi ?

93 x 10-23

9,3 x 10-23

93 x 10-22

9,3 x 10-22

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Oksigen di alam terdiri dari 3 isotop dengan kelimpahan berikut:

16O 17O 18O

99,76 % 0,04 % 0,20 %


Hitunglah massa atom rata-rata (Ar) dari unsur Oksigen tersebut !

17 sma

17 gram

16 sma

16 gram

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

1. Tembaga memiliki dua isotop yaitu 63Cu dan 65Cu. Jika Ar rata-rata Cu = 63,5. Tentukan % kelimpahan isotop 63Cu dan 65Cu ?

persentase isotop 63Cu = 75% dan persentase isotop 65Cu = 25%

persentase isotop 63Cu = 25% dan persentase isotop 65Cu = 75%

persentase isotop 63Cu = 70% dan persentase isotop 65Cu = 30%

persentase isotop 63Cu = 50% dan persentase isotop 65Cu = 50%

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

1. Hitunglah nilai yang terkadandung dalam massa molekul relatif (Mr) dari senyawa Ca(OH)2 (Ar Ca =40, Ar O = 16, Ar H = 1) ?

75

76

74

78

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

1. Hitunglah nilai yang terkadandung dalam massa molekul relatif (Mr) dari senyawa Aluminium Sulfat Al2(SO4)3 (Ar Al = 27, Ar S = 32, Ar O = 16 ) !

344

346

342

345

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