ACT Science Practice Question #1817 (Hard (560)) | Test Citadel
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ACT Science Difficulty: Hard (560)

Digital ACT Science Practice Question #1817

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If the initial sample temperature is heated from 20°C to 1,000°C in an induction furnace, the half-life of Iodine-131 will: Experiment Context (Radioactive Decay of Iodine-131): A radiochemist tracked the decay of a pure 80.0 mg sample of Iodine-131 (half-life = 8.0 days), measuring residual mass with a scintillation detector: Table 21: - Day 0: Residual I-131 = 80.0 mg (100% remaining) - Day 8: Residual I-131 = 40.0 mg (50% remaining) - Day 16: Residual I-131 = 20.0 mg (25% remaining) - Day 24: Residual I-131 = 10.0 mg (12.5% remaining) - Day 32: Residual I-131 = 5.0 mg (6.25% remaining)
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Radioactive half-life is unaffected by temperature.

Masterclass Solution & Distractor Trap Analysis

Radioactive half-life is governed by strong/weak nuclear forces and is invariant to temperature, pressure, or chemical bonding....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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