Consider the reaction between zinc metal and hydrochloric acid. Explain why each of the following either increases or decreases the rate of the reaction: Increasing the temperature of the hydrochloric acid Lowering the concentration of the hydrochloric acid Adding a catalyst to the reaction

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

the answer is minerals.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

it's c (engineer's do their work with mechanical stuff not on any living being)