a) How many moles of atoms are in 7.00 g of 13C?
Answer "0.538" mol 13C
1mol 13C has mass = 13g
7.00g 13C has mass = 7.00g/13g/mol = 0.538 mol atoms
b) Based on your answer in Part A, calculate the number of atoms in this amount of 13C?
1mol of atoms of any element contains 6.022*10^23 atoms
0.538 mol will contain 0.538*6.022*10^23 = 3.24*10^23 13C atoms
Answer "3.24×10^23" 13C atom
c) Based on your answer in Part B, how many electrons are in this amount
of 13C?
Each 13C atoms has 6 electrons
Number of electrons = 6*3.24*10^23 = 1.94*10^24 electrons.
d) Based on your answer in Part B, how many neutrons are in this amount of 13C?
13C means that the atom contains 6 protons , 6 electrons and 7 neutrons
Number of neutrons = 7* 3.24*10^23 = 2.27*10^24 neutrons.
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