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# how to work out molarity?? watch

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1. (Original post by XcitingStuart)
The molarity of what? The ethanol?
yes
2. (Original post by neverbeejail)
yes
This is confusing me sorry. Is that exactly how the question was worded?
Is it possible to say it word for word?
3. (Original post by XcitingStuart)
This is confusing me sorry. Is that exactly how the question was worded?
Is it possible to say it word for word?
basically im writing a report and i cant have the concentrations i need to convert it to molarity i have differing ethanol concentrations and different water concentrations and in each solution theres 0.5 ml yeast

i also have NaCLO with mineral water ( differing concentrations again)
4. (Original post by neverbeejail)
basically im writing a report and i cant have the concentrations i need to convert it to molarity i have differing ethanol concentrations and different water concentrations and in each solution theres 0.5 ml yeast

i also have NaCLO with mineral water ( differing concentrations again)
So you have differing concentrations. What are those concentrations exactly how they're worded, like the entire paragraph?
5. (Original post by XcitingStuart)
So you have differing concentrations. What are those concentrations exactly how they're worded, like the entire paragraph?
theres no wording like for example 1 ml ethanol 0.5ml mineral water and 0.5ml yeast i need to find out molarity of ethanol does the yeast affect it
6. (Original post by neverbeejail)
theres no wording like for example 1 ml ethanol 0.5ml mineral water and 0.5ml yeast i need to find out molarity of ethanol does the yeast affect it
you'd need concentration of ethanol, then do moles of ethanol = concentration x volume (in dm3)
The problem here is I'm not sure of whether the volumes should be added up, best bet is to not add them up, I think, but there's a high chance that'd be wrong.

It's either:
a) volume of ethanol (1 / 100)
b) volume of solution (1 + 0.5 + 0.5 / 100)

One of those two, can't remember what to do here.

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