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# Chemistry - Atomic Structure - Question Help pls

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1. Would I have to explain what goes through a mass spectrometer for this question?

"Define the term relative atomic mass. An element exists as a mixture of three isotopes.
Explain, in detail, how the relative atomic mass of this element can be calculated from data obtained from the mass spectrum of the element.​" (7 Marks)
2. (Original post by J-ved)
Would I have to explain what goes through a mass spectrometer for this question?

"Define the term relative atomic mass. An element exists as a mixture of three isotopes.
Explain, in detail, how the relative atomic mass of this element can be calculated from data obtained from the mass spectrum of the element.​" (7 Marks)
Relative atomic mass is the average mass of an atom of an element relative to 1/12th the mass of a carbon-12 atom.

To find the Mr, you simply just multiply and add all the peaks and divide (often by a 100). I'd imagine you probably might have to speak about what happens in a spectometer, since the question is a hefty 7 marks. 3 is for the definition, 4 is for explanation.

Edit: you need to post the whole question, as what I've given is general. You've mentioned that it says "specific element"? I'm assuming you've been given a mass spectrum anyway, so just use that along with the definition and you should be fine.
Relative atomic mass is the average mass of an atom of an element relative to 1/12th the mass of a carbon-12 atom.

To find the Mr, you simply just multiply and add all the peaks and divide (often by a 100). I'd imagine you probably might have to speak about what happens in a spectometer, since the question is a hefty 7 marks. 3 is for the definition, 4 is for explanation.

Edit: you need to post the whole question, as what I've given is general. You've mentioned that it says "specific element"? I'm assuming you've been given a mass spectrum anyway, so just use that along with the definition and you should be fine.
Yeah, I guess it makes sense to explain the end bit of the mass spec (Detection and Data Analysis). And no it didn't give me any elements or mass spectra to refer from. I'm currently answering some load of past paper questions on each topic so I'm currently doing atomic structure so maybe because they just stuck all the relevant past paper questions together, they may have gotten rid of some important bits, not sure though. But this is how it looks. Also, thank you for the help!
4. (Original post by J-ved)
Yeah, I guess it makes sense to explain the end bit of the mass spec (Detection and Data Analysis). And no it didn't give me any elements or mass spectra to refer from. I'm currently answering some load of past paper questions on each topic so I'm currently doing atomic structure so maybe because they just stuck all the relevant past paper questions together, they may have gotten rid of some important bits, not sure though. But this is how it looks. Also, thank you for the help!
Was this really a past paper question? Seems quite vague. But anyway, as I said, multiply and add all the peaks and divide by the necessary value to get the weighted average. However, I'm not sure if that would get you all the marks, you'd still be missing 2/3??
Was this really a past paper question? Seems quite vague. But anyway, as I said, multiply and add all the peaks and divide by the necessary value to get the weighted average. However, I'm not sure if that would get you all the marks, you'd still be missing 2/3??
Yeah, not sure if it actualy is a past paper question, I just searched some topic questions and these are as close as I could get too. But yeah, it's AQA btw and thanks once again.

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