Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

secondary 4 | A Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Nornisha Mutalip
Nornisha Mutalip

secondary 4 chevron_right A Maths

how to answer 17-18,19??

Date Posted: 6 years ago
Views: 526

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Arnold K H Tan
Arnold K H Tan's answer
2088 answers (A Helpful Person)
1st
Note that Bromine is in Group VII, so its formula is Br2. There are 2 moles of H atoms per 1 mole of H2 molecules.
Nornisha Mutalip
Nornisha Mutalip
6 years ago
tq