Bài 1 : Cho 20 ml dung dịch AgNO3 1M (D = 1,1g/ml ) vào 150 ml dung dịch HCl 0,5M (D = 1,05g/ml). Tính C% Và Cm của các chất tan trong dung dịch sau phản ứng Bài 2 : A là hợp chất của cacbon và hidro trong đó hidro chiếm 20% về khối lượng a/ Tìm CTHH của A biết 1g A ở đktc có thể tích là 746,67ml b/ Trong 0,5 mol A có bao nhiêu nguyên tử cacbon c/ Muốn có 9.10^22 nguyên tử hidro cần lấy mấy gam A

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