Question

1) Example of sublime substance.
2) Application of chromatography.
3) Scienst _________ first used the term element.
4) 1 mole =_________ atom.
5) There are________ atoms in 1 mole of N2

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Answer 1

Answer:

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1) dry ice, camphor, iodine, naphthalene etc

2) to separate colours from the dye, to separate pigments from natural colour, to separate drgs from the blood.

3) William Whewell

4) 6.022*1023

5) 2*Na atoms