Spectrophotometry

MS adduct m/z calculator: practice problems

Work out the result for mS adduct m/z calculator. Every answer here is computed by the same tested calculator the rest of the site uses, so a solution can never drift away from the maths.

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Problem 1 MS adduct m/z calculator

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  • Formula (optional): C9H8O4
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Adduct m/z for M = 180.0423 Da.

  1. Neutral mass: M (monoisotopic) = 180.0423 Da
  2. m/z: (M·n + adduct) / z

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Problem 2 MS adduct m/z calculator

Work out the result for mS adduct m/z calculator.

  • Formula (optional): C6H12O6
  • Observed m/z (optional): 203.05
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Closest adduct: [M+Na]+ at m/z 203.0526 (-12.8 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

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Problem 3 MS adduct m/z calculator

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  • Formula (optional): C6H12O6
  • Observed m/z (optional): 150
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Closest adduct: [M+H-H2O]+ at m/z 163.0601 (-80093.8 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

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Problem 4 MS adduct m/z calculator

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  • Formula (optional): C6H12O6
  • Observed m/z (optional): 300
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Closest adduct: [2M+H]+ at m/z 361.1341 (-169283.5 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

Open this in the calculator to change the numbers.

Problem 5 MS adduct m/z calculator

Work out the result for mS adduct m/z calculator.

  • Formula (optional): C6H12O6
  • Observed m/z (optional): 400
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Closest adduct: [2M+H]+ at m/z 361.1341 (+107621.9 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

Open this in the calculator to change the numbers.

Problem 6 MS adduct m/z calculator

Work out the result for mS adduct m/z calculator.

  • Formula (optional): C6H12O6
  • Observed m/z (optional): 100
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Closest adduct: [M+2H]2+ at m/z 91.039 (+98430.7 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

Open this in the calculator to change the numbers.

Problem 7 MS adduct m/z calculator

Work out the result for mS adduct m/z calculator.

  • Formula (optional): C6H12O6
  • Observed m/z (optional): 750
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Closest adduct: [2M+H]+ at m/z 361.1341 (+1076791.1 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

Open this in the calculator to change the numbers.

Problem 8 MS adduct m/z calculator

Work out the result for mS adduct m/z calculator.

  • Formula (optional): C6H12O6
  • Observed m/z (optional): 250
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Closest adduct: [M+K]+ at m/z 219.0265 (+141414.2 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

Open this in the calculator to change the numbers.

Problem 9 MS adduct m/z calculator

Work out the result for mS adduct m/z calculator.

  • Formula (optional): C6H12O6
  • Observed m/z (optional): 200
Show the answer and the working

Closest adduct: [M+NH4]+ at m/z 198.0966 (+9608.6 ppm).

  1. Neutral mass: M (monoisotopic) = 180.0634 Da
  2. m/z: (M·n + adduct) / z

Open this in the calculator to change the numbers.

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