Cho 10,2 gam hỗn hợp hai andehit kể tiếp nhau trong dãy đồng đẳng của andehit no, đơn chức, mạch hở tác dụng với dung dịch AgNO; trong NH, thu được 43,2 gam kết tủa. Xác định công thức phân tử của hai andehit.

Viết một đoạn văn ( khoảng 150 đến 200 chữ ) trình bày cảm nghĩ về một truyện cổ tích mà em yêu thích, trong đó sử dụng ba trạng ngữ

phần củng cố á m.n bài 19 là:Môi Trường Hoang Mạc bài 20 là:Môi Trường Đới Lạnh hứa vote 5* cho ai làm giúp mình ạ🥺

mọi người giúp em với tí nữa phải nộp r mà hk bt làm ai giúp em hứa sẽ vote cho 5 sao và ht luôn

cho hình vẽ biết AB//EF//DC ;ED = 1/3 AD ,CF bằng 1/3 BC; AB = 8 cm ,EF= 16 cm. Tính x

Combine the sentences using the conjunction given: 1. He is very rich. He isn’t happy.  Although  No matter  However 2. She says anything. I don’t believe her.  Although  No matter  Whatever 3. He tried. He was not successful.  Although  No matter  However 4. It was cold. He didn’t wear any warm clothes.  Although  No matter  However 5. You return at any time. She waits for you.  Although  No matter  Whenever II. Change clauses of concession to phrases: 1. She didn’t eat much though she was hungry.  2. He couldn’t solve the problem though he was good at Maths.  3. Although it was noisy, I kept on studying.  4. Although he is strong, I’m not afraid of him.  5. Although it rained heavily, I went to school on time.  6. Mr. Pike doesn’t wear glasses though he is over sixty.  7. Although his English was good, he wasn’t chosen.  8. Mary will take a plane even though she dislikes flying.  9. Although he took many kinds of exercises, he got fatter and fatter.  10. Although Mary was sad, she managed to smile.  làm nhanh hộ mình nha

Giúp mình với mn ơiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

help me pleaseeeeeeeeeeeeeeeeee T.T

$\sqrt[]{6- √11}$ -$\sqrt[]{6 +√11}$

a) x2y2+2x2+y2+2 b) a2 - b2 + a - b