10. you are given a pure sample of silver (ag) that weighs 127 grams. how many atoms of silver are in this…

Explanation:

Step1: Calculate the number of moles

The molar mass of silver ((Ag)) is (M = 107.87\space g/mol). The number of moles (n=\frac{m}{M}), where (m = 127\space g). So, (n=\frac{127\space g}{107.87\space g/mol}\approx1.177\space mol)

Step2: Calculate the number of atoms

According to Avogadro's number (N_A=6.022\times 10^{23}\space atoms/mol) The number of atoms (N=n\times N_A) Substitute (n = 1.177\space mol) and (N_A = 6.022\times 10^{23}\space atoms/mol) (N=1.177\times6.022\times 10^{23}\space atoms\approx7.09\times 10^{23}\space atoms)

Answer:

(7.09\times 10^{23}\space atoms)