ACT Science Practice Question #1497 (Medium (29)) | Test Citadel
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ACT Science Difficulty: Medium (29)

Digital ACT Science Practice Question #1497

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The effusion times for 100 mL of four gases through a pinhole at 298 K were recorded: - Gas 1 (He, 4 g/mol): 10.0 s - Gas 2 (CH4, 16 g/mol): 20.0 s - Gas 3 (N2, 28 g/mol): 26.5 s - Gas 4 (CO2, 44 g/mol): 33.2 s Graham's Law states that effusion rate is inversely proportional to the square root of molar mass. Which gas effuses at the highest rate?
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Socratic AI Engine Step-by-Step Derivation
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Shortest effusion time = highest effusion rate = Helium.

Masterclass Solution & Distractor Trap Analysis

Helium has the lowest molar mass and the shortest effusion time (10.0 s), meaning it effuses fastest....

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

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