Achemist divides a large sample of a mixture into three smaller portions. each of these portions contains different ratios of the component substances that make up the mixture. which description best fits the mixture? a. compound b. element c. heterogeneous mixture d. homogeneous mixture e. pure substance which statement about scientific consensus is true? a. it represents the beliefs of most scientists. b. it is the only way to prove a theory true. c. it is necessary to form a hypothesis. d. it is an assurance that the interpretations of a study are correct. e. it is necessary before research can be published in a science journal.

It's not a pure substance because the question says its a mixture. so that rules out a, b, and E. It's D because it has diff ratios

2. scientific consensus is juding ideas and beliefs of many scientists in a certain topic. B, D, and E are wrong. it leaves A and C. It's going to be A because that's what scientific consensus has 2 do with.

GOOD LUCK HOMIE

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