Question

According to the periodic table, carbon has an atomic mass of 12.011 u. This indicates that the most abundant isotope of carbon is

carbon-11.
carbon-12.
carbon-13.
carbon-14.

Answer 1

@sweetburger any idea how to do this?

Answer 2

@GAzela1997

Answer 3

@DW101796

Answer 4

@lowcard2 @Luigi0210 @SarahEZZMcK @Abhisar @Awesome781 @anonymous_user @@dan815

Answer 5

Which do you think it is? Why or why not? It would be easier to tutor you if you explained what about the question is giving you trouble.

Answer 6

The most abundant will be that one whose atomic mass is closest to the average atomic mass

Answer 7

can u select the correct option now ?

Answer 8

I got carbon-12.

Answer 9

yeah i really did think it was carbon-12 too

Answer 10

Do you understand how?

Answer 11

is it right?

Answer 12

Yes.

Answer 13

not really can u explain please?

Answer 14

wait no i got it!!

Answer 15

The most abundant will be that one whose atomic mass is closest to the average atomic mass

Answer 16

Okay!

Answer 17

thanks! can u help me with other one please?

Answer 18

Sure!

Answer 19

I can try.

Answer 20

Which of the following atoms has the same number of neutrons as 19F?

16O
18F
20Ne
23Na
how do u do this one @DW101796

Answer 21

19 F has 19 - 9 = 10 neutrons 20 Ne = 20-10 = 10

Answer 22

See how they both equal 10?

Answer 23

yes but why are you subtracting 19 by 9? is that the rule?

Answer 24

Yes, for F.

Answer 25

oh so the answer would be the second one right?

Answer 26

20Ne would be your answer.


3rd one.

Answer 27

ooooo yea i see now because that way both sides would equal 10. okay. Thanks!

Answer 28

No problem man!