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31-01-2017
Chemistry

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A certain element x has four isotopes. 5.845% of x has a mass of 53.93961 amu. 91.75% of x has a mass of 55.93494 amu. 2.123% of x has a mass of 56.93539 amu. 0.2820% of x has a mass of 57.93328 amu. what is the average atomic mass of element x?

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Chrisstina Chrisstina

31-01-2017

53.93961amu x .05845 = 3.152
55.93494 amu x .9175 = 51.320
56.93539 amu x .02123 = 1.208
57.93328 amu x .002820= .16633
add It up.
amu = 55.83833
round to significant figures
amu = 55.84

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