meg377 meg377
  • 15-04-2021
  • Chemistry
contestada

72.2% of element X is mass number 85. 27.8% is mass number
87. What is the average atomic mass of element X? (Round to
the correct number of significant figures.)

Respuesta :

khamryinsimsstudent
khamryinsimsstudent khamryinsimsstudent
  • 15-04-2021

Answer:

11

Explanation:

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