A new element discovered in Durham was christened with the chemical symbol Du. A

Question

A new element discovered in Durham was christened with the chemical symbol Du. A representative 100.0g sample of the material contained 94.00g of Du-77, 4.00g of Du-76, and 2.00g of Du-75. What would you report the atomic mass of this new element to be? Show all work A new element discovered in Durham was christened with the chemical symbol Du. A representative 100.0g sample of the material contained 94.00g of Du-77, 4.00g of Du-76, and 2.00g of Du-75. What would you report the atomic mass of this new element to be? Show all work

Explanation / Answer

let's write the quantities relatives:

Du-77 = 94/100 = 0.94

Du 76 = 4/100 = 0.04

Du 77 = 2/100 = 0.02

AM = (0.94*77) + (0.04*76) + (0.02*77)

AM = 76.96 g/mol

Hope this helps

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