Which pair of elements has the most similar properties? A) N and P
B) K and He
C) I and CA
D) Li and B

So, the elements with similar properties to sodium (Na) are all of those elements in the same Group.

Explanation:

The ones "most" similar would be the ones closest in mass as well. Those would be Lithium (Li) and Potassium (K).

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

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.