... longer than painting. (ii) more expensive than painting. d) oiling . e) As water film on the surface of bicycle contains dissolved...
a) (i)(這個要背出來啊...) 1) Moisten a clean platinum/nichrome wire with concentrated hydrochloric acid. 2) Dip the wire into a crushed sample. 3) Heat the end of the wire strongly with a non-luminous flame. (ii) P: sodium Q: Calcium b) P...
...concentrate on the floor, if you stay on the floor, you will suffucate. Petroleum( oil - liquid) in water will go "up" to the top. So if oil leakage from a boat...
...stove is CH4 + O2 = CO2 + heat! liquid reaction wtih gas - oil burning is vaporization of the oil and react with air (oxygen)... All...
Thestructure of aspirin molecule is shown below : 圖片參考:https://s.yimg.com/lo/api/res/1.2/V5KLvXQbwxcpx2SV6nUCYg--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/https://encrypted-tbn2.gstatic.com/images?q=tbn...
The density of oil is lighter than that of water, so it will flow on water. If you...
...vigorously,你咁寫可以唔俾分。 eii) It can be stored under paraffin oil 2013-08-13 22:04:21 補充: 對。謝謝001及0022位高手