2. the concentration of ubod in a river entering the first of two lakes that are connected in series is equal to 20 mg/l. if the first-order bod reaction rate constant (k) equal to 0.35/d and complete mixing in each lake, what is the concentration of ubod at the outlet of each lake? the flow in the river is equal to 4000 m3/d and the volume of the first and second lake is 20,000 and 12,000 m3, respectively. assume steady-state conditions.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

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explanation:

answer:

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explanation:

answer:

yes that is right have a good day