
kimfar XI.5

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah larutan terdiri dari 3 mol zat A, 3 mol zat B, dan 4 mol zat C. Hitung fraksi mol dari masing – masing zat tersebut ?
a. 2
b. 3
c. 1
d. 4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 4,99 gram hidrat CuSO4.xH2O dipanaskan hingga terbentuk 3,19 gram tembaga (II) sulfat, maka harga x?
a. 6
b. 10
c. 7
d. 5
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pembakaran hidrokarbon menghasilkan 220 gram Co² dan 45 gram H²O. Rumus emperis senyawa tersebut adalah
a. CH
b. CH²
c. C²H
d. CH³
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Penulisan persamaan reaksi kimia yang benar untuk reaksi: Besi dengan klor membentuk besi (III) klorida, adalah
a. Fe
b. Cl
c. FeCl
d. O²
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kadar karbon dalam vitamin C adalah 41%. Berapa jumlah atom karbon yang terdapat dalam vitamin C?. Bila diketahui Mr senyawa tersebut adalah 176 dan Ar.C= 12.
a. 6
b. 5
c. 4
d. 2
a. 6
b. 5
c. 4
d. 2
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jumlah mol Ca(OH)2 (Ar Ca=40, H=1, O=16) dalam 14,8 gram adalah
a. 0,2 M
b. 0,5 M
c. 0,7 M
d. 0,12 M
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hitunglah jumlah mol dari 12 gram besi (Ca)?
Tentukan massa relatif dari besi yang dapat dilihat dalam sistem Periodik yaitu sebesar 40gr/mol
a. 0,5 M
b. 0,4 M
c. 0,3 M
d. 0,12 M
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