What is the mass of Silver in 3.45g AgS?

Mass = 2.59 g

Explanation:

Given data:

Mass of AgS = 3.45 g

Mass of silver = ?

Solution:

Number of moles of AgS:

Number of moles = mass/molar mass

Number of moles = 3.45 g/ 139.93 g/mol

Number of moles = 0.024 mol

1 mole of AgS  contain 1 mole of Ag.

0.024 mol contain 0.024 mol of Ag.

Mass of silver:

Mass = number of moles × molar mass

Mass = 0.024 mol × 107.86 g/mol

Mass = 2.59 g

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