Page 132 - แผนการสอน 63-2
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วิทยาศาสตร (ว 21104) ชั้นมัธยมศกษาปท 1
4. ปริมาณความร้อน 5,400 แคลอรี่ จะท้าให้น ้าเดือดมวลกี่กรัม กลายเป็นไอได้หมดพอดี(ก้าหนดให้ความร้อน
แฝงของการกลายเป็นไอมีค่า 540 แคลอรี่/กรัม)
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5. ถ้าต้องการให้น ้าแข็งมวล 1,000 กรัม อุณหภูมิ 0 องศาเซลเซียส กลายเป็นไออุณหภูมิ 100 องศาเซลเซียส
จะต้องใช้พลังงานความร้อนเท่าไร
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