Page 21 - Chapter 9
P. 21
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10 g ท าปฏิกิริยากับกรดไฮโดรคลอริกมากเกินพอ จะเกิดแก๊ส CO 2
2. เมื่อใช้ CaCO 3
3
1.56 dm ดังสมการ CaCO 3(s) + 2HCl(aq) CaCl 2(aq) + CO 2(g) + H 2O(l)
ให้หาผลได้ ร้อยละ ก าหนดมวลอะตอม Ca=40 H=1 O=16
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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