hoa tan hoan toàn m gam kim loai m bang dung dich hci du thu duoe v lit khí h2 (dktc).mặt khác néu hòa tan tan hết m gam kim loại m bằng dung dịch hz2o4, đặc ,nóng ,dư thì thu được muối sunfat của kim loại m ,nước và 1,5v lit khi so2 (dkte). a)so sánh hóa tri cùa m trong hai truong hop. b)biét khói luong muói sunfat tao thành gáp 1,5748 lần khối lượng muối clorua.xác định tên kim loai m?

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