Suppose you identify a new element, Pivotium. Pivotium has two isotopes: Pivotium-426 and Pivotium-417. In the mixture, 11% of the mixture is Pivotium-426; the rest of the mixture is Pivotium-417. What is the relative atomic mass for Pivotium?

Multiply the mass by the % written as a decimal and add the result.

426X0,11 + 417X 0.89 = 417.99 or 418

check 90% is. 417 only 10% 426

417X.9 +(426X0.10)=417.9

Suppose you identify a new element, Pivotium. Pivotium has two isotopes: Pivotium-﻿426﻿ and Pivotium-﻿417﻿. In the mixture, ﻿11﻿% of the mixture is Pivotium-﻿426﻿; the rest of the mixture is Pivotium-﻿417﻿. What is the relative atomic mass for Pivotium?

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Suppose you identify a new element, Pivotium. Pivotium has two isotopes: Pivotium-426 and Pivotium-417. In the mixture, 11% of the mixture is Pivotium-426; the rest of the mixture is Pivotium-417. What is the relative atomic mass for Pivotium?