The following information is available for a seeded 5-day bod test conducted on a wastewater sample. 15 ml of the waste sample was added directly into a 300-ml bod incubation bottle. the initial do of the diluted sample was 8.8 mg/l and the final do after 5 days was 1.9 mg/l. the corresponding initial and final do of the seeded dilution water was 9.1 and 7.9 respectively. what is the 5-day bod (bod5) of the wastewater sample?

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation:

the product of the pressure and volume is also constant

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when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml