hòa tan 8,1g oxit của một kim loại hóa trị ii vào dung dịch hcl dư kết thúc phản ứng thu được 13,6g muối clorua tương ứng. xác định công thức hóa học của oxit kim loại nói trên. Làm cụ thể giúp mình với ạ. Mình cảm ơn trước nha🥰

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Mickey Bushell was born with a rare medical problem affecting his back that meant he would never be able to walk. However, he refused to let this problem (1) ……. him from doing the things other children do. At school, Mickey (2) ……. part in a wide variety of (3) ……. despite being in a wheelchair. During a trip to an Outdoor Education Centre, the (4) ……. were amazed to see him having a (5) ……. at canoeing along with other pupils. Mickey took (6) ……. wheelchair racing at the age of eleven, and was (7) ……. to succeed. After training for a few months, he entered two races in a wheelchair-racing championship. He was (8) ……. against more experienced athletes, but he took the (9) ……. in both races and actually beat his (10) ……. easily. This was the beginning of a very successful career. In May 2009, he (11) ……. a new 100-metre world record in men's wheelchair racing. Despite a (12) ……. training schedule, Mickey supports the charity Get Kids Going in his spare time. It encourages children with special needs to participate in sport. 1. a. keep b. hold c. turn d. stay 2 a. played b. took c. had d. made 3. a. observations b. rehearsals c. gymnastics d. activities 4. a. supporters b. umpires c. instructors d. referees 5. a. go b. chance c. look d. fun 6. a. up b. print c. out d. over 7. a. dedicated b. decided c. absorbed d. compulsive 8. a. winning b. going c. competing d. trying 9. a. front b. field c. lead d. start 10. a. sprinters b. opponents c. enthusiastsd. contestants 11. a. beat b. held c. broke d. set 12. a. hectic b. relaxing c. reward d. congested