Unit conversion is a multi-step process, in which division or multiplication by a numeral factor is involved.
Density = (given)
Since, and
Now, converting to
:
= .
Hence, density is .
a = Proton transfer d = SN2 Nucleophilic substitution g = Nucleophilic subs at carbonyl(acyl Xfer) b = Lewis acid/base e= Electr
ophilic aromatic substitution h = Conjugate (nucleophilic) addn c = E2 elimination f = Carbonyl nucleophilic addn Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers. n(nh3)3
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Answer : The number of moles of ethane required will be 0.166 mole.
Explanation :
First we have to calculate the heat absorbed by water.
where,
q = heat absorbed = ?
m = mass of water = 851 g
c = specific heat of water =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get:
(1 kJ = 1000 J)
Now we have to calculate the moles of ethane required.
where,
= enthalpy of combustion of ethane = 1560.7 kJ/mol (standard value)
q = heat absorbed = 259.67 kJ
n = number of moles of ethane = ?
Therefore, the number of moles of ethane required will be 0.166 mole.