# question 11 n9 trial

## question 11 n9 trial

why the volume of oxygen is 12dm3???
why not 24 dm3??

anissuaidah

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## hm.suai

thats why .i also dont know how to do this question .

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## Re: question 11 n9 trial

because oxygen has 1 mole.hydrogen peroxide has 2 mole. so must divide by two

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## Re: question 11 n9 trial

Fairuz Saiyida Saidin

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## Re: question 11 n9 trial

OH OK! like that ahhh,

fathiah amran

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## Guide to answer Question 11

Look at the chemical equation.

1) What is the relationship between number of moles hydrogen peroxide & oxygen gas?
2) When one mole of hydrogen peroxide is decomposed, find the moles of oxygen gas produced.
3) Find the volume of gas by using relationship with Avogadro Constant

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## Question 11

2 mol of H2O2 produce
1 mol of O2
so volume of 1 mol of gas is 24 dm3
then volume of 1 mol of O2 is
24 divide 2 = 12dm3

fatin izzati>kurtdorisia

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## hmm.....

i got it correct...
check no of mole die btol2
2 mol of H2O2 = 1 mol of O
hence.. 1 mol of H2O2 = 1/2 mol of O .. okayh

azie noo
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## Re: question 11 n9 trial

but now i understand
thanks !

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## Re: question 11 n9 trial

anissuaidah

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## Re: question 11 n9 trial

0.5x24= 12.. you have to do based on the equation... then..u can see the works clearly..

nur farah anis

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