have a nice day buddy but I can't help you
1 kg -------------- 1000 g
x Kg ------------- 4251 g
1000 . x = 4251 . 1
1000 x = 4251
x = 4251 / 1000
x = 4.251 Kg
hope this helps !.
B. Apparently it's bitter. Did not know that
There are 6 electrons in an atom of carbon 13. Hope this helps!