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Electronegativity decreases from fluorine to astatine in group 17. This is because fluorine has the smallest number of electron shells in the group, which means there is less of a shielding effect than th...

Cl is very electronegative, which makes it electron withdrawing. This means the three Cl substituents pull electrons from the O-H bond. This causes further polarisation of the O-H bond, which means there ...

First, make sure everything is in the correct units: H = 155 kJ mol-1 = 155000 J mol-1 S = 131 J mol-1 T = 25 C = 298K Then use the Gibbs equation to calculate the free energy: G = H - TS G = 155000-298*1...

Write the equation and balance it. CH4 + 2O2 --> CO2 + 2H2O Assign the enthalpies of formation and the sign of the energy value with the corresponding molecule (Will demonstrate my technique if needed)...

Ethane is a symmetric molecule, therefore both groups of hydrogens occur in the same region and not in two different regions (for example chloroethane would have two different regions). Using the n+1 rule...