The Handbook of Chemistry and Physics lists the density of a certain liquid to be 0.7988 g/mL. Taylor experimentally finds this liquid to have a density of 0.7925 g/mL. The teacher allows up to +/- 0.500% error to make an "A" on the lab. Did Fred make an "A"? Prove your answer.

Fred did not tke an A in the exam.

Explanation:

To take an A in the exam, the density of the measurements must be between a 0.500% of 0.7925g/mL. That is:

0.7988g/mL + 0.7988g/mL* (0.5/100) = 0.8028g/mL

0.7988g/mL - 0.7988g/mL* (0.5/100) = 0.7948g/mL

That means to take an A on the lab the desnity determined must be between 0.8028g/mL and 0.7948g/mL

As the density determined was 0.7925g/mL, Fred did not tke an A in the exam

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