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Chemistry, 25.07.2021 18:00 carlosborquez67

tìm công thức hoá học của R và O biết trong hợp chất oxi chiếm 50% về khối lượng. tính khối lượng bằng gam của 500 phân tử này.

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tìm công thức hoá học của R và O biết trong hợp chất oxi chiếm 50% về khối lượng. tính khối lượng bằ...

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