Which bond from each set has the greatest bond energy and why? . a.) n-o or n-f. b.) b-f or b-cl. c.) b-c or o-f. d.) c-o or c=o. e.) p-br or p-cl

    A) N-F,  B) B-F,  C) O-F, D) C=O, E) P-Cl.

Explanation:

Bond energy is the energy that is to break the molecule apart. Bond energy affected by the electronegativity and no. of bonds.

A) N-F bond is more powerful than N-O because Fluorine is the highest electronegative element in the periodic table.

B) B-F has strongest bond than B-Cl, due to higher electronegativity of fluorine.

C) O-F has highest bond energy than B-C, because O is strong covalently bonded with fluorine which is the highest electronegative.

D) C=O has highest bond energy, because double bond has required more energy to break than the single bond.

E) P-Cl has high bond energy than the P-Br, because Cl has small size and more electronegative than Br.

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