Prasyarat HK.Kekekalan Energi, sistem, dan lingkungan
Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Clarysa Satari
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Logam magnesium direaksikan dengan larutan asam klorida membentuk larutan magnesium klorida dan gas hidrogen, maka persamaan reaksi yang benar dan setara adalah....
Mg(s) + HCl(aq) → MgCl2(aq) + H2(g)
Mg(s) + 2HCl(aq) → MgCl(aq) + 2H2(g)
2Mg(s) + 2HCl(aq) → MgCl(aq) + H2(g)
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Setarakan reaksi berikut ini:
Ba + Al2(SO4)3 → Al + BaSO4
Koefisien reaksinya berturut-turut adalah....
1,1,1,1
3,1,2,3
3,1,1,1
1,1,2,3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Massa KOH padat (Mr = 56) yang harus ditimbang untuk membuat 250 mL larutan KOH 0,4 M adalah....
5,6 gram
11,2 gram
56,0 gram
22,4 gram
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui massa atom relatif (Ar) C = 12; O = 16; K = 39), maka massa 2 mol K2CO3 adalah....
138 gram
276 gram
300 gram
250 gram
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
mol merupakan satuan jumlah (a)_____________ zat yang sama dengan banyaknya (b)_______________ yang terdapat dalam (c)_________ C-12 yang (d)__________ 12 gram
(a) partikel
(b) atom
(c) isotop
(d) massanya
(a) unsur
(b) atom
(c) isotop
(d) massanya
(a) partikel
(b) partikel
(c) isotop
(d) massanya
(a) partikel
(b) atom
(c) isoton
(d) massanya
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gambar berikut termasuk kedalam
Senyawa
Unsur
Atom
Molekul
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