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vivado [14]
4 years ago
12

The u.S. Mint produced pure silver quarter commemorative coins in 1992, each coin weighing 5.67 g. How many silver atoms are pre

sent in each coin?
Chemistry
1 answer:
PolarNik [594]4 years ago
4 0

Mass of each silver coin = 5.67 g

Molar mass of silver = 107.87 g/mol

Calculating the moles of silver from given mass and molar mass of silver:

5.67 g Ag*\frac{1molAg}{107.87g} =0.0526molAg

Calculating the atoms of silver in 0.05260 mol using the conversion factor, 1mol=6.022*10^{23}atoms:

0.05260 mol*\frac{6.022*10^{23}atoms }{1mol} =3.17*10^{22}atoms

Therefore, 3.17*10^{22}atoms of silver are present in each coin.

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