All chemistry question are here.

Moderator: ChangBroot

Forum rules
Please post chemistry questions only here.


Postby expert007 » Wed 04 May, 2011 16:43

Imagine that you have two identical flasks, one containing
hydrogen at STP and the other containing oxygen
at STP. How can you tell which is which without
opening them?
Posts: 19
Joined: Fri 18 March, 2011 17:56


Postby little_scholar » Wed 04 May, 2011 16:45

The containers are identical. Both containers contain the same number of gas molecules. Weigh the containers. Because the molecular mass for `O_2` is greater than the molecular mass for `H_2`, the heavier container contains `O_2`.
Posts: 23
Joined: Sun 20 March, 2011 19:13
Location: Ajax, ON, Canada

Return to Chemistry

Who is online

Users browsing this forum: No registered users and 2 guests