Quiz Formatif Ar dan Mr

Quiz Formatif Ar dan Mr

10th Grade

10 Qs

quiz-placeholder

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Quiz Formatif Ar dan Mr

Quiz Formatif Ar dan Mr

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Medium

Created by

Dwie Annisa

Used 2+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 15 pts

Diketahui massa rata-rata atom X adalah 2,66 × 10-23 gram dan massa 1 atom C-12 = 1,99 × 10-23 gram. Tentukanlah massa atom relatif (Ar) unsur X tersebut!

15,76

16,01

16,04

15,04

16,76

2.

MULTIPLE CHOICE QUESTION

1 min • 15 pts

Oksigen terdiri atas 3 isotop yaitu isotop 16O dengan kelimpahan 99,7%, 17O dengan kelimpahan 0,04%, dan 18O dengan kelimpahan 0,2%. Tentukanlah massa atom relative oksigen!

15,99

15,98

15,89

15,97

15,90

3.

MULTIPLE CHOICE QUESTION

1 min • 15 pts

Jika massa 1 atom C-12 diketahui sebesar 1,9 × 10-26 kg, sedangkan massa 1 atom Na diketahui sebesar 3,6 × 10-26 kg, maka massa atom relatif

22,73

22,5

22,3

23,05

23,01

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Massa 1 atom C-12 = 12 sma

True

False

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Apabila massa atom relatif Fe=56, S=32, O=16. Maka massa molekul relatif dari senyawa Fe2(SO4)3 adalah ....

104

152

192

248

400

6.

MULTIPLE CHOICE QUESTION

1 min • 15 pts

Massa Atom Relatif H adalah 1

True

False

7.

MULTIPLE CHOICE QUESTION

1 min • 15 pts

Diketahui massa atom relatif Na = 23, H=1, O=16, C=12, dan N=14 serta beberapa rumus senyawa berikut.

(1)    NaOH

(2)    CH3COOH

(3)    Na2CO3

(4)    NH4OH

(5)    NaCl

Diantara senyawa tersebut, yang mempunyai massa molekul 60 ditunjukkan oleh nomor ...

(1)

(2)

(3)

(4)

(5)

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