Menghitung Kalor Razel
Quiz
•
Physics, Science
•
7th Grade
•
Practice Problem
•
Medium
Arsyad Prabowo
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17 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Besi bermassa 10 kg dinaikkan suhunya dari 2oC menjadi 12oC, ternyata kalor yang dibutuhkan sebesar 111 kkal. Kalor jenis besi tersebut sebesar ...
0,11 kkal/kgoC
1,1 kkal/kgoC
110 kkal/kgoC
1.100 kkal/kgoC
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Untuk memanaskan 150 gram air (c= 1 kal/goC) agar suhunya naik 120oC diperlukan kalor sebesar ...
158 kalori
1.240 kalori
1.800 kalori
18.000 kalori
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sebanyak 250 g air dipanaskan dari suhu 20oC menjadi 60oC. Bila kalor jenis air 4200 J/kgoC, maka kalor yang diperlukan adalah ….
A. 16.800 J
B. 21.000 J
C. 33.600 J
D. 42.000 J
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sepotong tembaga memerlukan kalor 615 kJ untuk melebur. Jika kalor lebur tembaga 205.000 J/kg, massa tembaga adalah .... kg
A. 3
B. 5
C. 7
D. 9
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Air sebanyak 0,2 kg bersuhu 25oC dipanaskan dengan kalor sebesar 42.000 Joule. Bila kalor jenis air = 4200 J/kg oC, maka besar suhu akhir air adalah…..
A. 100oC
B. 80oC
C. 75oC
D. 50oC
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Air massanya 5 gr dipanaskan dari 10°C sampai 40°C. Jika kalor jenis air 1 kal/ gr°C, banyaknya kalor yang diperlukan untuk suhu air adalah
A. 100 kalori
B. 150 kalori
C. 200 kalori
D. 400 kalori
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
2 kg air dari suhu 24°C dipanaskan menjadi 90°C. Jika kalor jenis 4.200 Joule/kg°C, maka kalor yang diterima air adalah …
A. 336.000 Joule
B. 259.200 Joule
C. 554.400 Joule
D. 543.600 Joule
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