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cw1 - Let ℓ = 100 m w = 45 m d = 11 m and ρ = 60 mg L ρ...

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patel (kp9583) – CW1 – Mackie – (20211) 1 This print-out should have 2 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. DEADLINE IS CENTRAL TIME!! 001 10.0 points A water holding tank measures 100 m long, 45 m wide, and 11 m deep. Traces of mercury have been found in the tank, with a concen- tration of 60 mg / L. What is the total mass of mercury in the tank? Correct answer: 2970 kg. Explanation: Let : = 100 m , w = 45 m
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Unformatted text preview: Let : ℓ = 100 m , w = 45 m , d = 11 m , and ρ = 60 mg / L . ρ = m V m = ρ V = ρ ℓ w d = (60 mg / L) (100 m) (45 m) (11 m) × kg 10 6 mg · 1000 L m 3 = 2970 kg . 002 10.0 points Convert the volume 5 . 1 in . 3 to m 3 , recalling that 1 in. = 2.54 cm and 100 cm = 1 m. Correct answer: 8 . 3574 × 10-5 m 3 . Explanation: V = ( 5 . 1 in . 3 ) p 2 . 54 cm 1 in P 3 · p 1 m 100 cm P 3 = 8 . 3574 × 10-5 m 3 ....
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