Calculation Of G

Calculating the cell emf from free-energy change: Suppose the reaction of zinc ions and chloride ions are formed in aqueous solution. Zn(s) + Cl_(2)(g) overset(H_(2)O)rarrZn^(2+)(aq.) + 2Cl^(-)(aq.) Calculate the standard emf for this cell at 25^(@)C from standard free energies of formation. Strategy: Calculate Delta_(r)G^(@) and substitute it along with the value of n into the equation Delta_(r)G^(@) = -nfE_("cell")^(@) . Solve for E_("cell")^(@)

An atom of an element weighs 6.644 times 10^(-23) g. Calculate g atoms of element in 40 kg-

Weight of one atom an element is 6.44 xx 10^(23) g . Calculate g atom of elements in 40 kg .

For the reaction, 2A (s) + 2B (g)to C (g) + D(s) at 298K Delta U ^(@) =-10.5KJ and Delta S ^(@)=-44.10 JK^(-1) Calculate Delta G ^(@) for the reaction (in Joules).

Calculate the amount of water (g) produced by the combustion of 16 g of methane