Cho 200ml dung dịch Ba(OH)2 0,5M tác dụng với 300ml dung dịch H2SO4 0,4M. Viết phương trình hóa học xảy ra. Tính nồng độ mol và nồng độ phần trăm của dung dịch thu được sau phản ứng. Giả sử khối lượng riêng của hai dung dịch Ba(OH)2 và H2SO4 lần lượt bằng 2,3g/cm3 và 1,6g/cm3.

Các câu hỏi liên quan

Exercise 1: Complete the sentences, using the correct form of the verbs in the box. 1. I requested that everyone in my class (attend) __________my presentation. 2. I suggest that we (focus)__________on its advantages and disadvantages. 3. Our Geography teacher also advised that we ( talk)__________about issues that are familiar and important to our classmates. 4. The teacher demanded that the classroom (clean) __________ immediately. 5. My father insists that my brother (work) ____________ on the farm. 6. The governmentdemanded that rural people ( allow) _________________to live and look for jobs in big cities. 7. The government urged that people ( not/ waste) ______________natural resources. 8. His parents insisted that he ( find)____ ____________ a job and settle down in a big city. 9. My mother recommended that I (follow) _______________in my grndpa’s footsteps and ( become) _________ a teacher 10. I suggested that he ( move) ____________to the city for a better health care. Exercise 2: Complete the sentences, using the correct form of the verbs in brackets. 1. It is important that he (get) ___ gets___into a good university. 2. It is vital that people (allow) __________where to live. 3. It is crucial that urban people (not look down on) __________ rural people. 4. It is recommended that the presentation ( be) __________ no more than 15 minutes. 5. It's important that we ( talk)__________about how developed countries have solved the urbanisation problems. 6. Is it really necessary that we ( include ) _________ new information in the conclusion? 7. It is necessary that he (find)__________ the books. 8. It is important that you ( remember) ___________ this question. 9. It is important that the government (encourage )______________more investment in rural areas. in rural areas. 10. It is desirable that people in rural areas (have) ________ access to modern facilities and technology