the value of delta H° for aniline = -3201. 5 Kj/mol
<u><em> calculation</em></u>
Step 1: find heat
Q ( heat) = C ( specific heat capacity) x ΔT ( change in temperature)
C= 4.25 kj/c°
ΔT = 69.8-29.5 = 40.3 c°
Q= 4.25 kj/c x 40.3 c = 171.28 kj
Step 2: find the moles of aniline
moles = mass/ molar mass
= 4.98 g/ 93.13 g/mol =0.0535 moles
Step 3 : find delta H
171.28 kj / 0.0535=3201.5 kj/mol
since the reaction is exothermic delta H = -3201.5 Kj/mol
Answer:
197.5pm
Explanation:
Given parameters:
Diameter of the atom = 395pm
Unknown:
Radius of the atom =?
Solution:
Radius is the half of diameter;
Radius = 
Radius = 
= 197.5pm
Answer:Lone pairs are the valence electron pair of any element which do not take part in bonding but affect the shape of molecules. Bond pairs or shared pairs are the electron pair which does both affect the geometry of molecules and take part in chemical bonding. These are form due to sharing of electrons.
Explanation:
