an-atom-of-x-with-atomic-number-9-has-a-mass-of-18-with-an-abundsnce-of-19-a-mass-of-19-with-an-abundance-of-3-5-and-the-remainder-has-a-mass-of-20-determine-the-relative-mass-of-atom-x-

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Question Number 155190 by joki last updated on 26/Sep/21

$$\mathrm{an}\mathrm{atom}\mathrm{of}\mathrm{x}\mathrm{with}\mathrm{atomic}\mathrm{number}9\mathrm{has}\mathrm{a}\mathrm{mass}\mathrm{of}$$$$18\mathrm{with}\mathrm{an}\mathrm{abundsnce}\mathrm{of}19\mathrm{\%},\mathrm{a}\mathrm{mass}\mathrm{of}19\mathrm{with}$$$$\mathrm{an}\mathrm{abundance}\mathrm{of}3.5\mathrm{\%}\mathrm{and}\mathrm{the}\mathrm{remainder}\mathrm{has}\mathrm{a}$$$$\mathrm{mass}\mathrm{of}20.\mathrm{determine}\mathrm{the}\mathrm{relative}\mathrm{mass}\mathrm{of}\mathrm{atom}\mathrm{x}?$$

Answered by physicstutes last updated on 26/Sep/21

$$\mathrm{Ram}=\frac{19\times 18+3.5\times 19+77.5\times 20}{100}=97.9$$

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