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25 July, 22:11

hydrogen-2 is also known as deuterium as well as hydrogen-3 is known as tritium hydrogen-1 is our common hydrogen isotope a sample hydrogen gas has 99% hydrogen - 1,0.8% deuterium, and 0.2% tritium what is the average atomic mass of this mixture of isotope to the thousands place

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  1. 25 July, 22:46
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    H-1 only has 1 proton and 1 electron, so its mass number is 1.

    H-2 has one more neutron so its mass number is 2

    H-3 has one more neutron than H-2 so its mass number will be 3.

    average atomic mass = 1 x 99% + 2 x 0.8% + 3 x 0.2%

    =1.012
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