Answer:
7.5 mol
Step-by-step explanation:
2Al + 3Br₂ ⟶ 2AlBr₃
You want to convert moles of AlBr₃ to moles of Br₂.
The molar ratio is 3 mol Br₂:2 mol AlBr₃.
Moles of Br₂ = 5 × 3/2
Moles of Br₂ = 7.5 mol Br₂
You need 7.5 mol of Br₂ to produce 5 mol of AlBr₃.
Answer: "Yes".
______________________
Answer:
esters
Explanation:
The -OR group of the alcohol replaces the -OH of the carboxylic acid, forming an ester. See attachment for condensed mechanism.
Concentration of hydrogen ions remaining in the final solution is 
In original solution we have 1.450M of HCl
1.450 M means 1.450 moles of HCl in 1 liter of water
Therefore, number of moles of HCl in 500ml of water will be
=
moles
= 0.725 moles of HCl
Reaction between HCl and Zn happens when zinc is added -
→ 
Therefore two moles of HCl is needed for 1 mole of zinc
Thus number of moles of HCl needed to react with 12.7g of Zinc will be
= 
= .388 Moles
So moles of HCl left =
= 0.3365 moles
In 1 Mole of HCl there is 1 mole of H because
→ 
Therefore in 0.3365 mole HCl there will be 0.3365 moles of H
Thus final concentration of H ions in final solution is =
= 
= 0.673M
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