ASESMEN FORMATIF
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
ASTRIKA SINAGA
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Jika diketahui (Ar K=39, S =32, O =16), maka Mr dari senyawa berikut adalah …
78
110
167
174
186
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Jika diketahui Ar Ca = 40, C = 12, O = 16 dan bilangan Avogadro = 6,02×10^23, maka 50 gram CaCO3 mempunyai jumlah molekul…
3.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Jumlah mol dari 29 gram magnesium hidroksida Mg(OH)2 adalah . . . (Ar Mg = 24, O = 16 dan H = 1)
4.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Konsentrasi larutan dibuat dari 25 gram padatan CaCO3 dan dilarutkan dalam air hingga volume larutan menjadi 500 mL adalah… (Ar Ca = 40, C = 12, O = 16)
5.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Volume oksigen yang dihasilkan pada reaksi pemanasan 49 gram kalium klorat (Mr = 122,5) pada keadaan standar adalah ...
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Massa dari 1,204 × 10^22 molekul NH3 (Ar N = 14 dan H = 1) adalah …
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Volume dari 8 g SO3 (Ar S = 32 dan O = 16) pada suhu 30 °C dan tekanan 1 atm (R = 0,082) adalah ...
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