Page 23 - Chapter 8
P. 23
20
2. ปฏิกิริยา SiO 2 (s) + C ( s) Si (s) + CO ( g ) ………(1)
Si (s) + Cl 2 ( g ) SiCl 4 ( l ) ………(2)
SiCl 4 ( l ) + H 2 ( g ) Si (s) + HCl ( g ) ………(3)
ถ้าต้องการ Si 140 g จะต้องใช้ SiO 2 กี่กรัม
(ก าหนด มวลอะตอม H=1 C=12 O=16 Si =28 Cl=35.5)
กระบวนการคิดวิเคราะห์โจทย์และค านวณ
ขั้นที่ 1 ท าความเข้าใจปัญหา
1.1 สิ่งที่โจทย์ก าหนดให้
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1.2 สิ่งที่โจทย์ต้องการทราบ
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ขั้นที่ 2 วางแผนแก้ปัญหา
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ขั้นที่ 3 ด าเนินการตามแผน
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