Answer:
B. X and Y only
Explanation:
Hello,
In this case, by considering the Le Chatelier's principle, if we desire an increase in the hydrogen iodide amount, based on the given reaction, two procedures are needed:
- Add HCl(g) to the reaction vessel: because the addition of a reagent shifts the reaction rightwards.
- Add I2(s) to the reaction vessel: by cause of the same aforesaid reason.
Therefore, the answer is: B. X and Y only.
Z statement is not true since the change in the mole number for the reaction is zero (2+1-2-1=0) considering each species' stoichiometric coefficients.
Best regards.
Answer: V= 44. 6 L
Explanation: use Boyle's Law
P1V1 = P2V2
Derive to find V2:
V2 = P1V1 / P2
= 937.57 Pa( 12.5 L ) / 262.52 Pa
= 44.6 L
The oxidation number<span> of a Group 2 element in a </span>compound<span> is +2. The </span>oxidation number<span> of a Group 17 element in a binary </span>compound<span> is -1. The sum of the </span>oxidation numbers<span> of all of the atoms in a neutral </span>compound<span> is 0. The sum of the </span>oxidation numbers<span> in a polyatomic ion is equal to the charge of the ion.</span>
Answer:
Group 7 or the Halogens
Explanation:
The halogens occupies the 7th group on the periodic table. The group is made of F, Cl , Br, I and At.
The elements in this group are the most reactive of all elements. They are very reactive because they have just 7 electrons in their outermost shell and they only require an electron to complete their electronic configuration to produce an octet which typically mimics the stable group VIII elements.
This makes them very highly reactive.
