Community College of Baltimore CountyCHEMIC 131 1) A sample of pure copper has a mass of 16

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Community College of Baltimore CountyCHEMIC 131

1) A sample of pure copper has a mass of 16.35 g. How many moles does this mass correspond to?

(A)3.887 mol

(B)1.549 x 10²³ mol

(C.)0.2573 mol

(D.)2.715 x 10^-23 mol

2. Which sample contains the greatest number of atoms?

(A)25g Cu

(B)25g F₂

(C)25g Ne

(D)25g Ba