STOIKIOMETRI 1

STOIKIOMETRI 1

1st - 5th Grade

30 Qs

quiz-placeholder

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STOIKIOMETRI 1

STOIKIOMETRI 1

Assessment

Quiz

Chemistry

1st - 5th Grade

Easy

Created by

Dina Laurina

Used 10+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Berapa massa molekul relatif (Mr) dari C2H5OH? Ar C= 12, O= 16, H= 1

45

46

29

36

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Suatu bahan makanan terdiri dari 3 unsur yaitu unsur C, H, dan O. Bahan makanan ini memiliki komposisi 72 gram C, 10 gram H, dan 128 gram O. Maka rumus empiris bahan makanan tersebut adalah .... (Ar C = 12, H = 1, O = 16)

C6H10O8

C3H5O4

C8HO14

C4H6O12

C2H3O6

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Suatu bahan makanan terdiri dari 3 unsur yaitu unsur C, H, dan O. Bahan makanan ini memiliki komposisi 36 gram C, 5 gram H, dan 64 gram O. Maka rumus empiris bahan makanan tersebut adalah .... (Ar C = 12, H = 1, O = 16)

C6H10O8

C3H5O4

C8HO14

C4H6O12

C2H3O6

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Prosentase terbanyak dari unsur nitrogen terdapat pada pupuk ….

Ar H=1, C=12, N=14, O=16, Na=23, S=32, Ca=40

CO(NH2)2

(NH4)2 SO4

NaNO3

NH4NO3

Ca(NO3)2

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Dalam 200 mg contoh bahan terdapat 25 mg perak dan 10 mg emas. Presentase perak dan emas berturut-turut dalam batuan tersebut adalah ….

5 % dan 12,5 %

10 % dan 25 %

12,5 % dan 5 %

25 % dan 10 %

50 % dan 20 %

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Suatu senyawa memiliki rumus empiris CH2. Jika massa molekul relatif senyawa tersebut 70, rumus molekulnya adalah ....

C2H4

C3H6

C4H8

C5H10

C6H12

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The one of the following formulae is an empirical formula.

P4H6

C4H8

CH2O

C6H12O6

C6H14

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