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Author Question: Infrared luminescence is used to: a. Detect if two different inks were used in the writing of a ... (Read 65 times)

faduma

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Infrared luminescence is used to:
 
  a. Detect if two different inks were used in the writing of a document.
  b. Reveal writing that has been erased.
  c. Prepare ink for thin-layer chromatography.
   d. a and b

Question 2

The nucleus of an atom contains:
 
  a. Neutrons.
  b. Neutrons and electrons.
  c. Protons and electrons.
  d. Protons and neutrons.


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stallen

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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faduma

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Both answers were spot on, thank you once again



stallen

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