The diagrams P, Q and R show the atoms in a compound, an element and a mixture, but not necessarily in that order. Which row of the table correctly identifies P, Q and R?

look at the photo

C.

Explanation:

A mixture contains two or more substances.

A compound contains elements in a fixed ratio.

P = Element

Q = Compound

R = Mixture

The correct order is C.

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:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).