Dẫn V lít khí CO2 (đktc) vào 500ml dd Ca(OH)2 0,02M thu được 0,6 gam kết tủa. Lọc kết tảu thu được, đun nóng dd lại thấy xuất hiện kết tủa. Tìm giá trị của V?? Giải chi tiết dùm mình nha

mng giải giúp mình mấy câu trắc nghiệm với ạ

Mọi người giải giúp mình bài này vớii, mình cảm ơn ạ

Vẽ anime + Full màu + Đẹp = CTLHN ; Xấu = BC Vẽ cs tâm vì tui cho cj họ tui ó

cần gấp lắm mong mọi người giúp đỡ ko cần bài 6 đâu

mọi người giải giúp em bài này với ạ

Nhập hai số a,n ghi ra chữ số tận cùng a^n(a<=100,n<=10^6)

Làm giúp mình câu 1,2 nhé. Mình đang cần gấp. Mình cảm ơn nhiều lắm

Giúp e bài này vs ạ phân vân mỗi bài này

4). I don’t like Mark,……………. a). Who is too serious b). That is too serious c). Whom is too serious d). Who too serious 5). The boy………………..is Tom. a). Which can answer this question b). Whom can answer this question c). Whose can answer this question d). Who can answer this question 6). Ho Chi Minh is the city………………… a). Which is more crowded than Hanoi b). Which it is more crowded than Hanoi c). Where it is more crowded than Hanoi d). That it is more crowded than Hanoi 7). Friends are people…………..close to us. a). Who is b). Whom are c). Whose are d). Who are 8). Do you know the girl…………….? a). Who Tom is talking to b). All are correct c). That Tom is talking to d). To whom Tm is talking 9). I enjoyed the wedding party …………….. a). Which it took place last night b). Which took place last night c). It took place last night d). Last night which it took place 10). What was the name of the woman …………….? a). Which passport was stolen b). That her passport was stolen c). Her passport was stolen d). Whose passport was stolen 11). He is the man ……………. a). For the police whom are seeking b). For that the police are seeking c). For who the police are seeking d). For whom the police are seeking 12). He always wears clothes …………… a). Which are too small for him b). Are too small for him c). Who are too small for him d). Whose are too small for him 13). You are lucky to work with people …………. a). I can’t bear admiring their abilities. b). That abilities I can’t bear admiring c). Whose abilities I can’t bear admiring d). I can’t bear admiring whose abilities 14). Mr. Lee,………………, teaches chemistry. a). Who I met yesterday b). That I met yesterday c). whom I met him yesterday d). I met him yesterday 15). She gave her children everything. a). Who they want b). What they want c). Which they want d). That they want 16). Helen introduced me to her sister,……….. a). That I have never met before. b). Whom I have never met before. c). I have never met her before. d). Who I have never met her before. 17). The boy ………….is my friend. a). Which dictionary you are using b). Which dictionary you are using c). Whose his dictionary you are using d). His whose dictionary you are using giúp mình với