Mass spectometry and Infra red

• Used to identify unknown substances
• Isotopes can cause M+1 peaks
• sample is vaporised, ionised, accelerated, and deflected
• A fragment of 56 with a 2+ charge would be shown as 28
• Used to find isotopes and so the relative atomic mass of an element
• It can also be used to find the relative molecular mass of an element
• Identify the compound

  A) C3H7Br

  
• Infra red is looking at the table and comparing the peaks with the numbers