5,34g hợp chất X có 4,14g Pb,0,24g C và 0,96g Oxi. Tìm CTHH của X

Các câu hỏi liên quan

I. Odd one out: 1. a. city b. town c. flat d. province 2. a. house b. far c. near d. modern 3. a. lane b. street c. stream d. avenue 4. a. orange b. bread c. buildings d. noodles 5. a. how b. village c. where d. who 6. a. small b. quiet c. noisy d. center 7. a. like b. jump c. skip d. dance 8. a. island b. sea c. fish d. factory 9. a. crowded b. countryside c. noisy d. modern 10. a. pretty b. bad c. nine d. beautiful II. Choose the correct answer: 1. Ha Noi is a big ............. in the north . A. street B. city C. town D. lane 2. His.......... is 187B, Giang Vo Street. A. class B. road C. town D. address 3. There are two tall ........... in my street. A. tower B. towers C. town D. mountains 4. Linda :Who do you live ........? Mai: I live ........... my parents . A. in – in B. for – for C. with- with D. at - at 5. Choose the odd one out ( the stress ) : A. tower B. village C. city D. address 6. Ha Noi and Ho Chi Minh City are two big............. in the country. A. city B. country C. cities D. countries 7. Mai : Where do you live , Trung ? Trung : I live .......... Flat 18 ........ the second floor.............. Ha Noi Tower. A. in - on – to B. of - in - on C. in - on – of D. on - in - in 8. His flat is far .... the city centre. A. from B. to C. with D. of 9. Ha Noi is a big ............. in the north . A. street B. town C. city D. lane 10. Choose the odd one out: A. with B. from C. in D. city III. Complete withe the given words cities - city - mountain - village - Tower - floor - hometown - address 1. Quang Nam ………………..……….. is my father’s hometown. 2. My aunt and uncle live in a small ………………..……….. in the countryside. 3. Her family lives on the third ………………..……….. of HAGL Tower. 4. There is a big and tall ………………..……….. in front of my house. 5. Da nang is one of the most beautiful ………………..……….. in Vietnam. 6. Their ………………..……….. is 97B, Nguyen Van Cu Street. 7. Truong Son is the longest ………………..……….. in my country. 8. Peter’s ………………..……….. is London City in England. IV. Put the words in order to make sentences: 1. address/ What/ Mai’s/ is? ______________________________________________ 2. does/ she/ Who/ with/ live ? ______________________________________________ 3. her/ Is/ house/ beautiful? ______________________________________________ 4. 56 Nguyen Trai/ is/ Street/ It. ______________________________________________ 5. she/ Where/ does/ live? ______________________________________________ 6. Danang/ hometown/ His/ city/ is. ______________________________________________ 7. hometown/ like/ What/ his/ is? ______________________________________________ 8. small/ quiet/ village/ and/ It/ is. ______________________________________________ 9. you/ Do/ your/ live/ with/ parents? ______________________________________________ 10. are/ modern/ There/ towers/ my/ in/ town. ______________________________________________ V. Complete each sentence. 1. Thai Binh _______ is our hometown. a. Street b. Flat c. Province d. Address 2. Our village is _________ a. quiet b. peaceful c. All A&B correct d. our town 3. There are many means of transportation on the _______ rush hour. a. Street b. Streets at c. Streets d. Street at 4. His _________ is 56 Duy Tan, Cau Giay. a. Street b. House c. Home d. Address 5. Hakim________ from Malaysia. a. Come b. Does come c. Do come d. Comes VI. Complete each word. 1. VI_LA_E a. N/ I b. L/ G c. M/ I d. D/ G 2. I_LAND a. Z b. S c. D d. A 3. H_MET_WN a. O/ O b. O/ E c. I/ E d. O/ U 4. NOI_ _ a. SU b. SY c. SU d. ST 5. COU_T_YSIDE a. N/ R b. N/ S c. M/ R d. M/ S gấp!!!