Electrophiles for the electrophilic aromatic substitution reactions have to be very strong to react with the stable aromatic rin
gs. A nitronium ion is needed for nitration of aromatic rings. Complete the mechanism of the formation of the nitronium ion from concentrated nitric acid in concentrated sulfuric acid.
1 answer:
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38.46g
Explanation:
Given parameters:
Mass of CaF₂ = 75.0g
Unknown:
Mass of calcium that can be recovered = ?
Solution:
This is a mass percentage problem and we need to solve it accordingly.
To solve this problem;
Find the molar mass of CaF₂
Find the ratio between the molar mass of Ca and that of CaF₂
Multiply by the given mass
Molar mass of CaF₂ = 40 + (2 x 19) = 78g/mol
Mass of calcium = x 75 = 38.46g
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