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Verdich [7]
3 years ago
12

How many silver (Ag) atoms are in a silver bar that is 20.0 g? A. 1.3 3 1027 Ag atoms B. 6.02 3 1023 Ag atoms C. 1.1 3 1023 Ag a

toms D. 1.8 3 1023 Ag atoms
Chemistry
2 answers:
ad-work [718]3 years ago
6 0

Answer: The correct option is, (C) 1.13\times 10^{23}

Explanation: Given,

Mass of Ag = 20 g

Molar mass of Ag = 108 g/mole

First we have to calculate the moles of Ag.

\text{Moles of }Ag=\frac{\text{Mass of }Ag}{\text{Molar mass of }Ag}=\frac{20g}{108g/mole}=0.185moles

Now we have to calculate the number of atoms in Ag.

As, 1 mole of Ag contains 6.022\times 10^{23} number of Ag atoms

So, 0.185 mole of Ag contains 0.185\times 6.022\times 10^{23}=1.13\times 10^{23} number of Ag atoms

Therefore, the number of atoms present in Ag are, 1.13\times 10^{23}

postnew [5]3 years ago
4 0
C. 1.1 3 1023 Ag atoms
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