cho 0,3 mol al ,0,4mol mg tác dụng với V lit dd hno3 2M vừa đủ thu được đdX và 0,3mol no tính v và tổng lượng muối trong X

Giúp em bài này với ạ . Làm ơn , cần gấp ạ

Calli Danger Tone đỏ-đen Kí #BTS NL: Nát tan còn đó yew thương này Gạt đi nước mắt Quên đi lời yew Buông tôi ra .... (Danger Vietnam ver :D)

( 2x-1 )( 4x^2+2x+1 ) - 4x(2x^2-3)

Put the verbs in brackets in the correct form : past simple, future simple, present simple, present pefect, future continuous 1. Angelina (be) an english teacher since she was 21 2. Who do you thinh ( get ) this job ? Giúp mk. Tối mk hok r. Mk cảm ơn trc

III. Choose the best answer A, B, C or D to complete the sentences below 1. Listen! Someone______ at the door. a. are knocking b. is knocking c. knock d. knocks 2. ________. I forgot my calculator. a. Oh dear b. I see c. You’ll see d. That’s OK 3. I’m excited _________ our first day at school. a. in b. with c. about d. for 4. Let’s _______ our school uniform and go to school. a. take off b. wear on c. put off d. put on 5. Get up, Tom. We ________ to school, today. a. are going back b. going back c. go to back d. are going to back 6. I meet my friend ______ my way to school a. in b. on c. at d. with 7. Do you ______ your things with your classmates? a. share b. help c. put on d. wear 8. My school is _______ by mountains and green fields. a. surrounding b. surround c. surrounded d. surrounds 9. How do you get to school every day? – ___________ a. By bike b. On foot c. I walk to school d. all are correct 10. I ______ my homework with my friends. a. Play b. have c. do d. all are correct 11. Students live and study in a ____________ school. They only go home at weekends. a. Boarding b. international c. creative d. small 12. ________ does Mai usually cook dinner? – At 5 pm. a. What b. When c. What time d. Why 13. They are healthy because they _______ every day. a. Play chess b. do judo c. study vocabulary d. play music 14. Do you keep quiet when your teacher is talking? – ___________ a. Yes, I do b. Yes, we do c. Yes, I am d. a & b are correct 15. Hoang _____ in a small house in the center of the city. a. Live b. lives c. don’t live d. a & c are correct

Giúp câu 31 , 32 , 37 , 38 tự luận ra cho mik vs (bài đầu lớp 10)

Giúp em giải mấy bài này với ạ, em xin cảm ơn

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1.An anthem is a song 2.They could go fishing offshore 3.After an hour walking between the green fields 4.Auld lang Syne is a song 5.I decided not to move to that house ..................................................................... .a.if they had a big boat. b.because its neiborhood is noisy. c.which is sung on New year’s Eve. d .we finally reached the village entrance. e. which is sung on special occasion.