Question #10dc1

↳Redirected from "Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra. I seriously don't know anything about electron affinity all ik that it can buy another element"
1 Answer
David L.
Apr 10, 2017

#=0.340# #mol#

Explanation:

Using the periodic table, the molar mass of #Fe(C_2H_3O_2)_3# is approximatly #232.98g/(mol)#

Using the molar mass and the grams given, you can solve for moles,

#79.3g*1/232.98(mol)/g#

#79.3cancelg*1/232.98(mol)/cancelg#

#79.3/232.98mol#

#=0.340# #mol#

Or you could of used the equation,

#n=m/(mm)#

Where #n# is moles, #m# is mass in #grams# and #mm# is molar mass in #(grams)/(mol)#

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