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butalik [34]
3 years ago
12

Solve each problem, and express the answer in scientific notation. a.

Chemistry
1 answer:
aliina [53]3 years ago
7 0

Answer:

eat pineapple daily

Explanation:

live happily

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It took 70 seconds for 280cm³ of nitrogen to diffuse through a membrane. If Carbon(IV)Oxide is allowed to diffuse through the sa
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Answer:

t = 125.3 seconds

Explanation:

Molar mass of CO2 = 12+2(16) = 66

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rate of diffusion of N2 = volume/ time = 280cm³/70s

= 4cm³/s

let rate of CO2 = rate of diffusion of CO2 = volume/time

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Using Graham's law of diffusion,

rN2/rCO2 = √M(CO2)/M(N2)

4/400/t =√44/28 = 4t/400= √11/7

t/100 = 1.253 , t= (100)(1.253)

t = 125.3 seconds

hence it takes CO2 125.3 seconds to diffuse through the membrane

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