Ai giúp mik đc k ạ mik đg gấp!! Cảm ơn trc

Cho 33,6 gam sắt vào dung dịch H2 SO4 đặc, nóng, dư thì tạo thành V lít khí SO2 ở điều kiện chuẩn( sản phẩm khử duy nhất ).Tính khối lượng quặng pirit chứa 80% FeS2 cần dùng tối thiểu là bao nhiêu để tạo ra Lượng SO2 trên.

mk cần gấp trg 10p ạ làm hộ mk vs có 8 câu trắc nhiệm thuiii

Cho a , b ∈ N* Chứng tỏ rằng : a/b + b/a ≥ 2 Làm hộ với :(( chiều học rồi :v

ưe’ve ... with each other for 10 years , but i’ve never actually met him

10. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Your mother can speak French fluently, __________? A. can she B. can’t she C. does she D. doesn’t she 11. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. I was born __________ September 10th, 1996. A. on B. in C. at D. of 12. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Young people enjoy __________ computer games. A. play B. to play C. playing D. played 13. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. This castle __________ in the 17th century. A. build B. built C. is built D. was built 14. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Nam, together with his friends, _______ anxious to go back to school after Covid 19. A. is B. are C. has D. have 15. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. My sister studied hard, __________ she completed her exam successfully. A. although B. so C. because D. but 16. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. When his parents died, his grandmother __________ him. A. looked into B. looked for C. looked after D. looked up 17. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Sarah is from the USA. She is ____________. A. America B. American C. America’s D. American’s 18. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. We will become doctors and engineers when we __________ up. A. grow B. grew C. growing D. will grow 19. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. “That’s a nice dress you are wearing!” - “_____________” A. I’m glad you like it B. That’s alright C. That’s nice D. You’re quite right Trang | 1 | 2 | 3 | 4 | 5

Mọi ng giúp e bài này với, hứa đánh giá tốt ạ

2.Tính diện tích của phần tô đậm trong hình dưới đây: tinh S cua phan to dam duoi day

Tả mẹ của em( 2 trang rưỡi và k cop mạng)

2 biến điện có số liệu kỹ thuật như sau b1 điện áp định mức 127v công suất định mức 1500w b2 điện áp định mức 220v công suất định mức 1500w hỏi bếp nào nóng hơn . bếp nào tiêu thụ nhiều điện năng hơn vì sao .... để đảm bảo an toàn khi đun nấu cần lm j ai lm hộ mình vs ạ mai mình kt rồi