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1.What would happen to poisonous chlorine gas if

protons were added
neutrons were added

2. Boron is 80.20% boron -11 (atomic mass = 11.01 amu) and 19.80% of some isotope form of boron. What must the stomic mass of this second isotope be in order to account for the 10.81 amu average atomic mass of boron.?

3. For hundreds of years alchemist researched ways to turn various metals into gold. How would the structure of an atom 80(exponent 202)Hg (mercury) have to be changed for the atom to become an atom of 79 (exponent 197) Au (gold)

thank you for helping. I really don't know what to do.


    1. very silly question. Neither protons nor neutrons cannot be added to Cl2, and least in the history of mankind.


    avgmass=11.01*.8020 + (1-.8020)Z
    solve for z, you are given avgmass.

    3. If mercury lost one proton, and 4 neutrons from its nucleus, it would be Au-197



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