The molecular geometry of the chf3 molecule is and the molecule is a. trigonal pyramidal, polar b. tetrahedral, nonpolar c. tetrahedral, polar d. seesaw, polar e. seesaw, nonpolar

The correct option is: C. tetrahedral, polar

Explanation:

Trifluoromethane, also known as Fluoroform, is a chemical compound with the molecular formula CHF₃.

Since three fluorine atoms and one hydrogen atom is bonded to the central carbon atom and there are zero lone pairs on the carbon atom. Therefore, the molecular geometry and shape of CHF₃ is tetrahedral.

As there are three carbon-fluorine polar bonds in CHF₃ molecule, thus there is a net dipole moment. Therefore, CHF₃ is a polar molecule.

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