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thiennhi0612
2 năm trước
bài 1 / cho 6,3 gam hỗn hợp A gồm 2 kim loại nhôm và magie tác dụng hết với dung dịch HCl , sau phản ứng thu được 6,72 lít khí hiđro (đktc) a, tính khối lượng mỗi kim loại trong A b, lượng hiđro ở trên khử vừa đủ 17,4 gam oxit của kim loại M . xác định công thức hóa học của kim loại M . " cứu gấp : ( vote5+thanksss+ctl good nhất) làm ơn !!! "
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