One of the First Nuclear Bombs Based on the Fission

question 22

Multiple Choice

One of the first nuclear bombs based on the fission of U-235 had a maximum yield of 7.5 x10¹³ J.If the fission of U-235 releases 1.8 × 10¹³ J/mol,approximately what mass of U-235 was used in this bomb? (U-235 has a molar mass of 235.04 g/mol)

• A)9.8 × 10² g U-235
• B)56 g U-235
• C)0.018 g U-235
• D)0.0010 g U-235
• E)2.3 × 10² g U-236

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