How Many Moles of Kr Are Contained in 398 Mg

question 117

Multiple Choice

How many moles of Kr are contained in 398 mg of Kr?

• A) 4.75 × 10^-3 moles Kr
• B) 33.4 moles Kr
• C) 2.11 × 10^-4 moles Kr
• D) 2.99 × 10^-3 moles Kr
• E) 1.19 × 10^-4 moles Kr

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