Hey guys, I have a few questions that i'm having a little trouble with, I'm hoping someone can help. The only course that I'm really weak in is chemistry, so please..no one laugh(adsbygoogle = window.adsbygoogle || []).push({});

Ok so here it goes

1) A cylinder contains a mixture of hydrogen and chlorine molecules. Compare without doing any calculations:

a) the relative mass of the molecules

b) the temperature of each gas

c) the average kinetic energy of the molecules

d) the average speed of the molecules

I just dont understand what I have to do in this one or where I get the answers.

Here's the second question...

2) Find the number of atoms in

a) 25.5g of calcium metal

b) 1.5 mol of carbon

c) 1.5 of carbon dixide

I'm also not sure of this one, Is there a formula that i'm supposed to use?

3) Find the volume of a gas at -30C and 0.75 atm if it occupies a volume of 255 L at 40.0C and 1.25 atm.

I'm pretty sure I have to use Charle's Law, but again, not completely sure.

I'd also like to add that I'm learning Chemistry by myself, with no help from anyone except you guys, so thanks in advance to everyone

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# Homework Help: Simple Chemistry Q's

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