use examples from the article to explain one
positive and one negative effect that chemistry has
had on society.

Chemistry is the natural science that focuses on the study of the composition and structure of substances, the chemical changes that take place under certain conditions, and the laws that can be distilled from them.

Some positive results of chemistry are, among others, the creation of new drugs that have been used for the cure or treatment of various diseases, such as the creation of penicillin, aspirin or retro-virals against AIDS.

In turn, the negative results of chemistry have been the development of nuclear weapons or weapons of mass destruction, which have caused too many victims throughout history.

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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