Berapa persen kalium yang terdapat di dalam KNO3 jika diketahui Ar K = 39, N = 14, dan O = 16?
Perhitungan Dasar Kimia

Quiz
•
Chemistry
•
10th Grade
•
Easy
GEDE JATE
Used 7+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
38,16%
38,61%
39,16%
39,61%
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berapakah gram massa urea (CO(NH2)2) yang mengandung 0,15 mol urea? [Ar C= 12; O= 16; N= 14; H= 1]
9 gram
90 gram
12 gram
120 gram
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebanyak 6 gram kristal MgSO4 dilarutkan dalam air hingga volumenya 500 mL. Berapa konsentrasi molar (molaritas) larutan yang terjadi? [Mr MgSO4 = 120]
1,2 mol/L
1,0 mol/L
10,0 mol/L
0,1 mol/L
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berapakah Mr dari senyawa Na2CO3⋅10H2O berikut? [Ar Na= 23; C= 12; O= 16; H= 1]
124 gram
286 gram
1908 gram
19.080 gram
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Apabila diukur pada keadaan standar (0°C, 1 atm) massa dari 5,6 liter gas SO3 [Ar S= 32; O= 16] adalah ......
64 gram
40 gram
32 gram
20 gram
6.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
Di dalam 16,6 gram senyawa oksida nikel, terdapat 11,8 gram nikel. Jika Ar Ni = 59 dan O = 16, maka rumus empiris oksida nikel tersebut adalah ......
NiO2
Ni2O
Ni2O3
Ni3O4
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Volume akuades yang harus ditambahkan ke dalam 10 mL larutan H2SO4 pekat 18 M agar diperoleh larutan H2SO4 2 M adalah ......
170 mL
90 mL
80 mL
60 mL
8.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Perhatikan pernyataan berikut.
"Minyak ditambahkan ke dalam air membentuk suatu larutan."
Apakah pernyataan tersebut benar?
Iya benar, karena minyak tercampur dengan air
Tidak benar, karena minyak dan air dapat bercampur (homogen)
Benar, karena larutan adalah campuran antara minimal 2 zat, yaitu pelarut dan zat terlarut
Tidak benar, karena minyak dan air tidak homogen
Tidak ada jawaban yang benar dari pernyataan di atas
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