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How Many Chromium Atoms Are There in 78

Question 46

Multiple Choice

How many chromium atoms are there in 78.8 g of K₂Cr₂O₇?

A) 2.24 × 10²⁴ atoms
B) 1.12 × 10²⁴ atoms
C) 3.23 × 10²³ atoms
D) 1.61 × 10²³ atoms
E) 2.25 × 10²² atoms

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