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
geraldine l
Geraldine L

secondary 4 chevron_right A Maths chevron_right Singapore

hi is the answer A or C? and why is one of the two wrong?

Date Posted: 1 year ago
Views: 194
Eric Nicholas K
Eric Nicholas K
1 year ago
At -150, the molecules of oxygen…

…would sound more correct than “the atoms of oxygen”.

Option C looks better, but I have a different interpretation of “reached”. I could say that the temperature JUST reached -219, in which solid state is obviously not present (since no freezing has taken place yet), so option C can also be risky.

But then, if given a choice, option C would be better than option A. I think the question intended for “reached” to mean “already reached” rather than “just reached”.

See 1 Answer

It should be molecules of oxygen as oxygen gas exists as O2 molecules

Hence the answer is C
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Potatoes
Potatoes 's answer
14 answers (A Helpful Person)
1st