
Azas Black Postest
Authored by Atik Yuliana
Science
7th Grade
Used 3+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Air bermassa 0,1 kg berada pada suhu 20oC dipanasi hingga mendidih pada suhu 100oC. Jika kalor jenis air adalah 4200 J/kgoC, jumlah kalor yang diperlukan adalah….
21.200 Joule
33.600 Joule
35.000 Joule
36.300 Joule
38500 Joule
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
100 gram es mengalami proses peleburan seperti gambar disamping jika kalor jenis es 0,5 kal/g0 C , kalor jenis air 1 kal/g0 dan kalor lebur es 80 kal/g tentukan besar kalor yang diambil untuk proses tersebut
1050 kal
9000 kal
9250 kal
9500 kal
9750 kal
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sepotong benda 20 g bersuhu 100⁰C dimasukkan ke dalam zat cair 50 g yang bersuhu 25⁰C dan akhirnya mencapai keseimbangan pada suhu 50⁰C. Jika kalor jenis zat cair 20 kal/g⁰C, maka kalor jenis benda tersebut adalah …
20 kal/g⁰C
25 kal/g⁰C
30 kal/g⁰C
40 kal/g⁰C
50 kal/g⁰C
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebuah balok es bersuhu 0oC dengan massa 1/4 kali massa air dalam suatu wadah bersuhu 30oC. Jika kalor jenis air adalah 1 kal/goC dan kalor lebur es adalah 80 kal/goC, maka suhu campuran keduanya adalah ...
4oC
8oC
12oC
16oC
20oC
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sepotong alumunium massanya 0,5 kg dan suhunya 100°C dimasukkan ke dalam air yang massanya 0,5 kg dan suhu air 25°C.
Setelah terjadi kesetimbangan suhunya menjadi 36°C.
Dari hasil percobaan ini, kalor jenis alumunium adalah ... J/kg°C
459
594
918
721
1377
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