Joke Collection Website - Bulletin headlines - A few chemistry questions in grade three are not difficult!
A few chemistry questions in grade three are not difficult!
1. CO2+2mg = 2mgo+c
2.2co+2no = N2+2co2
3. The first one is to reduce the static electricity generated by friction, so that inflammable and explosive articles are not easily exposed to the fire source
The second one is because electromagnetic waves will be generated when the mobile phone is used. In short, it can cause the fire of inflammable and explosive articles
in order to reduce the dark fire
4.2CO+2=2CO2
5. In order to prevent the explosion of natural gas caused by excessive exposure to oxygen
6.(1) The gas is H2, H2+2o2 = 2h2o
(2) The gas is CO, 2co+O2.
- Related articles
- Staff suggestion box slogan
- How to divide the hot work level of gas station
- Full cursor details
- How to make a poster? How to make the poster? Brief introduction to poster practice
- It¡¯s suitable to say when you¡¯re feeling depressed, like there¡¯s only me in the world or there¡¯s no me.
- What is the phone number of the Traffic Police Brigade of Tengzhou City, Shandong Province?
- Site Spring Festival safety slogan Daquan banner
- What is the definition of vacant house in property management?
- Community Party Building Should there be a party emblem in front of the neighborhood center?
- People's Daily financial slogan slogan