Read the hypotheses below, then answer the questions. A student wonders if adding fertilizer to the soil will make tulips grow faster. The student’s hypothesis states, “If fertilizer is added to the soil, then the tulips will grow faster, because fertilizer adds nutrients to the soil.” Which of the following variables is the independent variable?

the type of soil the tulips receive – with or without fertilizer

the time it takes the tulips to grow

A

Explanation:

the type of soil the tulips receive_ with or without fertilizers

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