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caychuoinn2004
2 năm trước
Trong tự nhiên nguyên tố clo có 2 đồng vị là  17 Cl và 37 17  có nguyên tử khối trung binh của clo là 35,5. Số nguyên tử của đồng vị 37 17 Clo trong 3,65 gam HCI là (với PTK của HCI = 36,5) là  A. 2,138.104. B. 2,831.104. D. 1,505.10.
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