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The common isotope of uranium, 238U, has a half-life of 4.47×109 years, decaying to 234Th by...

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Physics

The common isotope of uranium, 238U, has a half-life of 4.47×109years, decaying to 234Th by alpha emission.

Part A: What is the decay constant? Express your answer ininverse seconds to three significant figures

Part B: What mass of uranium is required for an activity of 2.00curie? Express your answer in kilograms to three significantfigures.

Part C: How many alpha particles are emitted per second by 11.0g of uranium? Express your answer in decays per second to threesignificant figures.

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