8
QuizMultiple Choice

Writing and Balancing Chemical Equations — Cumulative exam

Question 8 • IA-Chemistry A Survey of Chemistry A

Which is the formula for diarsenic pentoxide?

Answer
A
Ar2O5
B
As5O2
C
As2O5
D
2As5O

Explanation

In a molecular name, the prefixes show how many atoms of each element are present. “Diarsenic” means 2 arsenic atoms, and “pentoxide” means 5 oxygen atoms, giving As₂O₅. Therefore, the correct choice is C, As₂O₅.

AI-written and checked against the verified answer.

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