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  1. #1
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    Default Anyone here who has studied Chemistry?

    I am trying to wrap my head around Moles and I'm stuck on one question.

    It says - A pure gold coin contains .145mol of Gold. What is its mass?

    The answer is apparently 28.6gms but I can not get that answer no matter what way I try.

    Help me before I throw my text book out of the window!

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    It has been a long time, but, I think you have to times the amount of moles by the molar mass.

    I just can't remember how to get the molar mass (eg g per mol).... I think it could be the atomic mass...

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    Yup- try .145 * atomic weight of gold.

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    Quote Originally Posted by CottonCandy View Post
    Yup- try .145 * atomic weight of gold.
    Thank you!! I could kiss you right now!

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    Yay I actually learnt something in chemistry all those years ago! Pity I don't use it...

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    I have finished my chem unit for this year in 2 weeks (and then the exam) and I can't freaking wait. I started out enjoying it, now I can't wait to see the back of it!


 

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