Christmas MT's answer to Escher's Secondary 3 Biology question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Christmas MT
Christmas Mt's answer
3275 answers (A Helpful Person)
1st
ericia teo
Ericia Teo
7 years ago
Answer for 3a has 1 minor mistake in calculation. 28n+ 56= 196
28n=140
n=5
Fe(CO)subscript5 -known as pentacarbonyl