ASESMEN FORMATIF

ASESMEN FORMATIF

10th Grade

10 Qs

quiz-placeholder

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ASESMEN FORMATIF

ASESMEN FORMATIF

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Hard

Created by

ASTRIKA SINAGA

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Media Image

Jika diketahui (Ar K=39, S =32, O =16), maka Mr dari senyawa berikut adalah …

78

110

167

174

186

2.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Jika diketahui Ar Ca = 40, C = 12, O = 16 dan bilangan Avogadro = 6,02×10^23, maka 50 gram CaCO3 mempunyai jumlah molekul…

3,01x10^21 atom
3,01x10^22 atom
3,01x10^23 atom
6,02x10^22 atom
1,204x10^23 atom

3.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Jumlah mol dari 29 gram magnesium hidroksida Mg(OH)2 adalah . . . (Ar Mg = 24, O = 16 dan H = 1)

0,2
0,5
2
2,5
5

4.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Konsentrasi larutan dibuat dari 25 gram padatan CaCO3 dan dilarutkan dalam air hingga volume larutan menjadi 500 mL adalah… (Ar Ca = 40, C = 12, O = 16)

0,025 M
0,05 M
0,25 M
0,5 M
0,1 M

5.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Volume oksigen yang dihasilkan pada reaksi pemanasan 49 gram kalium klorat (Mr = 122,5) pada keadaan standar adalah ...

4,48 liter
11,2 liter
17,92 liter
8,96 liter
13, 44 liter

6.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Massa dari 1,204 × 10^22 molekul NH3 (Ar N = 14 dan H = 1) adalah …

0,17 gram
0,34 gram
1,70 gram
2,80 gram
3,40 gram

7.

MULTIPLE CHOICE QUESTION

1 min • 10 pts

Volume dari 8 g SO3 (Ar S = 32 dan O = 16) pada suhu 30 °C dan tekanan 1 atm (R = 0,082) adalah ...

2,48 liter
5,24 liter
1,24 liter
6,12 liter
4,48 liter

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