Posted by **Kevin** on Sunday, September 16, 2012 at 1:37pm.

In part B of my question, I was asked calculate the number of atoms in 0.615 mol of 13C (mass number of this Carbon is 13).

I received the correct answer of 3.70E23 atoms.

However, I do not know how to do Part C of my question, which asks "Based on your answer in Part B, how many electrons are in this amount of 13C"?

Similarly, Part D asks "how many neutrons are in this amount of 13C"?

Thank you so much in advance!

- chemistry -
**DrBob222**, Sunday, September 16, 2012 at 2:15pm
You have 3.70E23 atoms and there are 12 electrons/atom so.......

For part D, you have 3.70E23 atoms and there are 7 neutrons/atom so......

Note: 6 potons and 7 neutrons = 13 nucleons = mass number 13

- chemistry -
**Anonymous**, Monday, February 4, 2013 at 12:47am
Based on your answer in Part B, how many electrons are in this amount of 13C?

Express your answer numerically in electrons.

=2.50×1024 electrons

- chemistry -
**Anonymous**, Monday, February 4, 2013 at 12:47am
Based on your answer in Part B, how many electrons are in this amount of 13C?

Express your answer numerically in electrons.

=2.50×10^24 electrons

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