What is the sum of all charges in the formula for an ionic compound?
A
+1
B
0
C
-1

B, 0

Explanation:

In an ionic compound, the charges must cancel out each other. This means that the sum of the charges will be 0.

For example, take NaCl, an ionic compound. Na has a charge of +1, and Cl has a charge of -1. The sum of +1 and -1 equals to 0.

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