Quiz Stoikiometri Kelas X
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Medium
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
Suatu oksida nitrogen terdiri dari 14 gram nitrogen dan 32 gram oksigen, rumus empiris oksida tersebut adalah.. (Ar N = 14, O= 16)
N4O3
N2O5
N2O3
N2O4
NO2
2.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Pupuk urea CO(NH2)2 mengandung carbon 18%. Jika Mr urea = 60, Ar C = 12, maka kemurnian pupuk urea adalah…
98%
90%
75%
60%
46%
3.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Konsentrasi larutan HCl yang diperoleh dengan mencampurkan 200 mL HCl 0,2 M dan 200 mL HCl 0,3 M adalah
0,60 M
0,50 M
0,30 M
0,25 M
0,20 M
4.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Ke dalam air dilarutkan 0,6 gram urea CO(NH2)2 sampai volume larutan menjadi 100 mL. Jika diketahui massa Molar Urea adalah 60 gram/ mol. Maka molaritas larutan yang terbentuk adalah…
0,5 M
0,02M
0,01 M
0,2 M
0,1 M
5.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Jika 25 gram batu kapur bereaksi dengan asam klorida berlebih, menurut reaksi :
CaCO3 + 2 HCl → CaCl2 + H2O + CO2
maka jumlah gas carbon dioksida yang dihasilkan pada suhu dan tekanan dimana 7 gram gas nitrogen bervolume 6 liter adalah…(Ar Ca = 40 , N = 14, C = 12, O = 16, H = 1, Cl = 35,5)
24 L
6 L
12 L
9 L
3 L
6.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Didalam 5,6 gram MgX terdapat 6,02 x 1022 partikel MgX , jika Ar Mg = 24, maka Ar X adalah…
4
8
64
32
16
7.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Triple superphosphate (TSP) adalah salah satu pupuk anorganik yang memiliki kandungan fosfor (P) tinggi pertama yang banyak digunakan pada abad ke-20 Secara teknis, pupuk ini dikenal sebagai calcium dihidrogen phosphat Ca(H2PO4)2 . Kadar Fosfor dalam pupuk TSP adalah….(Ar Ca = 40, H = 1, P = 31, O = 16)
26.5 %
36.5 %
46.5 %
16.5 %
20.5 %
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