Answer:
ethane=c2h6
ethyne=c2h2
ethene=c2h6
Explanation:
ethane has single bond between carbon atoms(it is alkane.) ethyne has triple bond between carbon atoms(it is alkyne) ethene has double bond between carbon atoms (it is alkene)
Answer: C. the same amount of energy as
Explanation:
A reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back.
Reversible reactions will reach an equilibrium point where the concentrations of the reactants and products will no longer change.
Thus if forward reaction is exothermic i.e. the heat is released , the backward reaction will be endothermic i.e. the heat is absorbed and in same amount.
The amount of energy released will be equal and opposite in sign to the energy absorbed in that reaction.
Answer:
Question 7 the answer is B
Explanation:
In every nuclear reaction there is always formation of products either by nuclei bombardment or by the elements breaking into two elements of the same mass
Question 8
The answer is A
Nuclear reactions release a huge amount of energy than chemical reactions
Elements named after celestial bodies are the following.
1.Element 34 (Selenium) is named after the moon. Selene is Greek for moon
2. Element 2 (Helium) is named after the sun. Helios is Greek for sun.
3. Element 52 (Tellurium) is named after the earth. Tellus is the Latin word for earth.
4. Element 80 (Mercury) is named after the planet Mercury. The name Mercury is also a name of a Roman god.
5. Element 92 (Uranium) is named after the planet Uranus.
6. Element 93 (Neptunium) is named after the planet Neptune.
7. Element 94 (Plutonium) is named after the planet Pluto.
Answer:
false
Explanation:
It is a physical reaction because it is being heated.
