1)which of the five suspects is using ink that matches the sample from the letter?
2) which of this suspects is using a pen that contains ink made from a single dye?
3) which two of the five suspects are using pens containing the same ink?
4) whose pen contain the dye that was most soluble in the solvent ?
please help!
Will give the brainliest!
please answer correctly.
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Ответ:
an oxygen atom with 8 electrons, 8 protons and 9 neutrons