2H2O2 decomposes into the products 2H2O + O2(g)
A physical change is one that a substance alters a substances form, but the substance has still not changed chemically. Carrots being cut up is changing the form of the carrots, but the fact that they are still carrots means it is a physical change. The answer is Carrots are cut into small pieces and mixed into a salad
The right answer here is that the best explanation for why the rusting of an iron nail in the presence of water and oxygen is an oxidation-reduction reaction is answer B) electrons are transferred. This is the only answer that actually explains the chemical reasoning behind the reaction.22/06/2016
Answer:
3 chlorine atoms are needed because each chlorine atom accepts one of Aluminum three valence electrons to obtain a full octet and makes chlorine a negatively charged anion
Explanation:
How many chlorine atoms are needed when making Aluminium Chloride?
The formular for aluminium chloride is given as; AlCl3
In the compound, Aluminium has a valency of +3 and the three chlorine atoms each have a valency of +1 to make the compound a neutral compound.
That meas we can represent AlCl3 as Al³⁺ and 3Cl⁻
The correct statement is;
3 chlorine atoms are needed because each chlorine atom accepts one of Aluminum three valence electrons to obtain a full octet and makes chlorine a negatively charged anion
Work out what CO2 is then calculate total. hope this helped.