Given the incomplete equation 4Al + 3O2 → 2X, what compound is X?
2 answers:
<u>Answer:</u> The correct answer is Option B.
<u>Explanation:</u>
When aluminium metal reacts with air, it produces an oxide named as aluminium oxide. The chemical formula for this compound is
The balanced chemical equation for the above reaction follows:
By Stoichiometry of the reaction:
4 moles of aluminium metal reacts with 3 moles of oxygen to produce 2 moles of aluminium oxide.
This reaction is a type of synthesis reaction because substances are reacting in their elemental state to produce one compound.
Hence, the correct answer is Option B.
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Answer:
(3R,4R)-4-bromohexan-3-ol
Explanation:
In this case, we have reaction called <u>halohydrin formation</u>. This is a <u>markovnikov reaction</u> with <u>anti configuration</u>. Therefore the halogen in this case "Br" and the "OH" must have <u>different configurations</u>. Additionally, in this molecule both carbons have the <u>same substitution</u>, so the "OH" can go in any carbon.
Finally, in the product we will have <u>chiral carbons</u>, so we have to find the absolute configuration for each carbon. On carbon 3 we will have an "R" configuration on carbon 4 we will have also an "R" configuration. (See figure 1)
I hope it helps!
The volume did not change, it remained at 20 ml
<h3>Further explanation</h3>Given
20 ml a sample gas at STP(273 K, 1 atm)
T₂=546 K
P₂=2 atm
Required
The volume
Solution
Combined gas Law :
Input the value :
The volume does not change because the pressure and temperature are increased by the same ratio as the initial conditions (to 2x)