Có 20,16 (l) (đkc) hỗn hợp gồm H2S và O2 trong bình kín, biết tỷ khối hỗn hợp so với hiđro là 16,22. a) Tìm thành phần thể tích của hỗn hợp khí. b) Đốt cháy hoàn toàn hỗn hợp trên, sản phẩm của phản ứng được hoà tan vào 94,6 (ml) nước. Tính CM, C% của các chất có trong dung dịch thu được.

Các câu hỏi liên quan

1/ All of us have to obey strictly. traffic rules B. traffic C. traffic jam D. regular 2/ Mai’s dad usually drives her to school her school is very far from her house. A. but B. though C. because D. or 3/ Yesterday Hoa and Lan round West Lake. It took them an hour. A. cycle B. cycles C. cycling D. cycled 4/ Linda used to morning exercise when she got up early. A. did B. does C. doing D. do 5/ - “Do you like seeing a film?” - “ ” A. No, I don’t like it at all B. Sure. What film shall we see? C. Who is in it? D. I’m sorry, I can’t. 6/ My father liked the of that singer. A. perform B. performer C. performance D. performing 7/ They were very disappointed her acting. A. of B. with C. in D. on 8/ A. safety B. chat C. taste D. waste II/ Put the verbs in the correct form or tense. He used to (travel)...................................... to Malaysia. I love ( watch ) .......................................... a fashion show on television. They (buy ) ……........………. that house last year. That boy ( have ) ………............…… some eggs last night. III/ Rewrite the sentence so that it has a similar meaning to the first. What did you usually do on Saturday evenings? → What did you use.......................................................................................................... We always gave our teachers presents at the end of term. → We used............................................................................................................................ Anna doesn’t live with her parents any more. → Anna used.................................................................................................................... They didn’t often go to the cinema every Sunday last year. → They didn’t use .............................................................................................................. 5. Although the weather was bad, she went to school on time. → Despite ........................................................................................................................ IV/ Make complete sentences using the following words and phrases. over 100 km/my hometown/Ho Chi Minh City .................................................................................................................................... not very far/ Ha Noi/ Noi Bai Airport .................................................................................................................................... 500 meters/ my house/ nearest shop ....................................................................................................................................