Which of the following liquid substances would you expect to have the lowest surface tension? and why? what intermolecular forces present in each?

a. pb
b. ch3och3
c. hoch2ch2oh
d. h2o
e. ch3ch2oh

CH3OCH3

Explanation:

Surface tension is directly proportional to the strength of the inter molecular bonds. So the one with the weakest intermolecular forces will have the lowest surface tension. Lead has the highest intermolecular forces (metallic bonds), water and alcohol have hydrogen bonding which are the second strongest bonds here. CH3OCH3  and HOCH2CH2OH both have London dispersion forces but CH3OCH3 has weaker ones of the two because it is smaller and therefore has the lowest surface tension

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

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8