user-avatar
hmtvvip
2 năm trước
hoà tan hoàn toàn 49gam hỗn hợp gồm Mg, MgO, MgCO3, Fe, FeO, FeCO3 vào dung dịch H2SO4 10% thu được 10,08 lít hỗn hợp khí có tỉ khối hơn so với H2 là 38/3. Dung dịch thu được sau phản ứng chỉ chứa 2 muối trong đó nồng độ phần trăm của MgSO4 là 6,2128%. Tính nồng độ phần trăm của FeSO4
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Exercise 5: Read and decide T (true)/ F (false) for each statement. Watching television is an interesting and fun activity. The word television is often shortened to TV. On TV you can watch many different programs about a wide range of things. Some examples of TV programs are news, cartoons, reality shows, sports, documentaries and soap operas. There are several channels which show different TV programs. In Vietnam, the main channels are called “VTV1”, “VTV2”, and “VTV3”. TV guides tell us what programs are showing on which channel, and at what time on a particular day. Most programs on TV are episodes that are part of a series. These episodes usually last for about 30 minutes or full hour. At the weekend, there are lots of interesting movies on TV. Now you don’t need to go to the cinema. You can watch films at home. It’s so comfortable. You can learn a lot from watching TV but you should not watch too much or you will hurt your eyes. No. Statements T/F 1. Watching television is an interesting and fun activity. 2. You can watch only some programs about a wide range of things. 3. “VTV1”, “VTV2”, and “VTV3” are the main channels in Vietnam. 4. We know the time and the name of programs thanks to TV guides. 5. There are lots of interesting movies on TV on weekdays. 6. TV does brings us any benefits. It damages our eyes.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team