
Hukum Kekekalan Massa
Authored by Nida Afifah
Chemistry
10th Grade
Used 1+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 10 gram belerang direaksikan dengan 10 gram oksigen membentuk gas belerang dioksida. Jika reaksi berlangsung sempurna maka massa belerang dioksida yang dihasilkan adalah…
12 gram
15 gram
17 gram
20 gram
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
N2(g) + 3H2(g) ⇒ 2NH3(g)
Jika 14 gram N2 bereaksi sempurna dengan Sejumlah gas hidrogen membentuk 17 gram amonia maka massa gas hidrogen yang bereaksi adalah…
3 gram
4 gram
5 gram
6 gram
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Kawat tembaga dibakar dalam pembakar bunsen sehingga terbentuk tembaga oksida (CuO).
2Cu(s) + O2(g)→2CuO(s)
Jika berat Cu semula 34 g dan O2 8 g, berapa berat CuO yang terbentuk?
42 gram
40 gram
34 gram
26 gram
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perhatikan persamaan reaksi dibawah ini
SO2(g) + O2(g) ⇒ SO3(g)
Agar reaksi diatas sesuai dengan Hukum konservasi massa maka koefisien SO2 dan SO3 berturut-turut adalah…
1 dan 2
2 dan 1
2 dan 2
1 dan 3
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sejumlah karbon dibakar dengan 32 gram oksigen, menghasilkan 56 gram karbon monoksida. Jika pada akhir reaksi masih terdapat 6 gram karbon.
Berapakah massa mula-mula karbon?
32 gram
30 gram
28 gram
25 gram
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada pembakaran 2,4 gram magnesium di udara dihasilkan
4 gram oksida magnesium, berapa gram massa oksigen yang
terpakai dalam reaksi itu dan bagaimana persamaan reaksi
pembakaran tersebut ?
6.4 gram
4 gram
2.4 gram
1.6 gram
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui sebuah karbon dibakar dengan oksigen yang memiliki massa 30 gram. Pada akhir reaksi, masih ada karbon dengan massa 4 gram.
Hasil pembakaran tersebut menghasilkan karbon monoksida dengan massa 58 gram. Hitunglah berapa massa karbon tersebut pada awalnya?
28 gram
30 gram
32 gram
34 gram
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