Lord omg okay help pls lol

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

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Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.