3 years ago

How is the water supply for New York being protected?

1 answer:

8 0

because of good government and there is skilled manpower who help and protect the water supply for New York being protected............

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A powder sample weighing 250 g and having a surface area of 1 m2/g is dispersed in 1 L of water. After 10 minutes, 0.4 g of the

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Answer:

$K = 2.64 * 10^{-8}$

$15 \frac{5}{8}$ hours

Explanation:

Given

Surface Area (S) of 250 grams of powder sample $= 250$ square meter.

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$0.66 = K* 2500000* 10\\$

$K = 2.64 * 10^{-8}$ cm /sec

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$\frac{10*60}{0.4} * 37.5 = 56,250$

Time in hours

$15 \frac{5}{8}$ hours

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