How many total atoms are shown in this formula?
How many total atoms are shown in this formula? 4Al2O3
A) 5
B) 8
C) 20
D) 2
A) 5
B) 8
C) 20
D) 2
Answer: C) 20
Explanation: The formula 4Al2O3 indicates there are 4 units of Al2O3. Each unit of Al2O3 contains 2 aluminum (Al) atoms and 3 oxygen (O) atoms, totaling 5 atoms per unit. Therefore, 4 units contain 4 x 5 = 20 atoms.
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