Imagine that you have two identical flasks, one containing
hydro...

Question

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?

Accepted Answer

Hello everyone today, we are being given the falling problem, Consider two identical flasks at S. T. P. Which stands for standard temperature and pressure. One contains nitrogen gas and the other contains argon gas. Which of the following is a method to distinguish the two without opening the flasks. So the first thing we want to note is that we are dealing with identical flasks, meaning that the volume, pressure and temperature will be constant, slash the same. That's what standard temperature pressure indicates. Secondly, we have to figure out how we're going to distinguish these two without opening them. So we then have to note what gasses we're working with. And so we have argon gas and we have nitrogen gas. So the molar mass of argon gas Is going to be 39.9 g per mole per the periodic table. And the molar mass of our nitrogen gas For the periodic table is 14 g per mole. With this, we can note that the molar mass of argon is greater than the molar mass of nitrogen gas. And so this tells us that our argon gas container will be heavier and the flask that contains the nitrogen gas will be lighter. And so which answer choice reflects this answer choice. A wave of two flasks. The heavier flask contains argon gas while the lighter flask contains nitrogen gas because once again, the molar mass for argon gas is going to be greater than that of the molar mass for our nitrogen gas. And so with that we have answered a question overall. I hope that this helped. And until next time.

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