Chemistry, 05.09.2020 01:01 ramseynikki87

An unknown element as 2 isotopes. X-72 is 46.33% abundant and X-78 is 53.67% abundant. What is average atomic mass? Please round to two decimal places aka round to the nearest hundredth. NO UNIT

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An unknown element as 2 isotopes. X-72 is 46.33% abundant and X-78 is 53.67% abundant. What is avera...