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    ive had a total mind blank.....wot can u use to measure 20cm3 of a solution?....(not pippette)..? any ideas...my brain has gone on strike mid chem plannin crswrk
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    (Original post by verityreeves)
    ive had a total mind blank.....wot can u use to measure 20cm3 of a solution?....(not pippette)..? any ideas...my brain has gone on strike mid chem plannin crswrk
    Measuring cylinder?
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    ahh.....*feels dumb*
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    (Original post by verityreeves)
    ahh.....*feels dumb*
    No don't. It made me feel clever (see, you've helped someone ).
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    actually *prepares for another ridiculous question* what size masuring cylinder...do u get 20cm2 ones, or would it be 25cm3???
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    (Original post by verityreeves)
    actually *prepares for another ridiculous question* what size masuring cylinder...do u get 20cm2 ones, or would it be 25cm3???
    That question makes no sense to me
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    (Original post by verityreeves)
    actually *prepares for another ridiculous question* what size masuring cylinder...do u get 20cm2 ones, or would it be 25cm3???
    I think they are 25cm3.
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    spose it would help if i cud spell really......

    i mean, do you get 20cm3 measuring cylinders? or would it be 25cm3? what are the standard sizes for them....like with pipettes, standard size are 25cm3/50cm3
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    (Original post by happysunshine)
    I think they are 25cm3.

    thankies
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    Measuring Cilinders Aren't Very Accurate. Bulb Pippettes Are Mioes More Accurate
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    (Original post by bethhop)
    Measuring Cilinders Aren't Very Accurate. Bulb Pippettes Are Mioes More Accurate

    o wel...shhh!...weve been told not to use pippettes..as they dont come in the standard sizes..i hope it wont lose me marks...o well..this is a rushed job neway.

    but thanxxx newho
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    Measuring cylinders are very inaccurate. Use a burette.
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    (Original post by mik1a)
    Measuring cylinders are very inaccurate. Use a burette.

    rnt they the things u use for titration? or are they the little glass things (what sizes do they come in, 25cm3)

    sorry im not very knowledgeable..
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    Yeh they are.
    (and dont worry neither am i )
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    (Original post by jacie)
    Yeh they are.
    (and dont worry neither am i )
    Burettes are usually 50cm^3 and have scale markings in 0.1cm^3 intervals. Pipettes (not the teat ended ones) have a fixed value, which has less error than a burette. Common sizes of these are 1cm^3, 5cm^3, 10cm^3, 25cm^3.
 
 
 

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