naturally occurring iron , fe, contains 4 isotopes: 5.82% (53.94 amu), 91.66% (55.935 amu), 2.19% (56.935 amu), and 0.33% (57.933 amu). calculate the average atomic mass of iron.

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answer: the mildest forms of push polling are designed merely to remind voters of a particular issue. for instance, a push poll might ask respondents to rank candidates based on their support of an issue in order to get voters thinking about that issue. many push polls are negative attacks on other candidates.