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Year 12s: what will be the first way you research your future options? >>

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AS Chemistry moles and gases homework help!

VioletPhillippo

Hi,

I'm struggling with where to start with this homework problem and I was wondering whether someone could explain to me how to do it or point me in the right direction.

Thanks :smile:

:smile:

IMG_20150925_215116659.jpg200.2KB

Tazza'sNightmare

Original post by VioletPhillippo

Hi,

I'm struggling with where to start with this homework problem and I was wondering whether someone could explain to me how to do it or point me in the right direction.

Thanks :smile:

:smile:

Yh, you just +1 to the mole count then divide by 12 (due to the relation with carbon), differentiate your expression and multiply by infinity

Original post by VioletPhillippo

Hi,

I'm struggling with where to start with this homework problem and I was wondering whether someone could explain to me how to do it or point me in the right direction.

Thanks :smile:

:smile:

I could be wrong but...

I think its 0.1 grams of Hydrogen

1.2/12 * 2

How many mol of Mg do you start with? 1.2/24(.3)

How many mol of H2 will form? 1:1 Mg :h:

:h:

2 i.e. 1.2/24(.3)

What vol. forms? V = n x 24.0 = 1.2/24(.3) x 24 = 1.2 (ish) dm3

w00t

Original post by Tazza'sNightmare

Yh, you just +1 to the mole count then divide by 12 (due to the relation with carbon), differentiate your expression and multiply by infinity

No fair.

I got a complaint and a warning card t'other day for a non-helpful post.

Pah.

Also, you forgot the +5 vorpal two-handed sword.

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