<span>6.
Because the general formula for alkenes is CnH2n</span>
Physical science , earth science,and life science are the branches of natural science
<span>The balance format is
4NH3+ 5O2 -------> 4NO + 6H2O </span>
Properties of a compound is completely different from their elements.
Water is composed by hydrogen and oxygen.
For example, the boiling point of oxygen is - 183 °C and hydrogen is - 253 °C, meanwhile, water has a boiling point of 100°C
Another example is when you put a burning wooden splint into oxygen, it burns more brightly. Put it in hydrogen, you may hear a "pop" sound, or even explode when large amount of hydrogen. But if u put a burning splint in water, it goes off.
Melting, vaporization, boiling, and sublimation.
