Help me please. I really need it now Add a mixture of CaCO3, MgCO3 and Al2O3 weighing 0.602 g. Dissolve A in 50 ml of 0.5M HCl solution. To neutralize excess acid, 41.4 ml of 0.2M NaOH solution is required. Gaseous gas is released when A is dissolved in 93,6 ml of NaOH solution with a% concentration (d = 1,0039g / ml), then add a residue of BaCl2 solution, resulting in 0.788 g of precipitate and When boiled again, there was 0.134 more precipitate. Assuming all of these happen completely. Said
a. Ingredients% of substances in A
b. Calculate a

A is correct

Explanation:

11 players on a field that has a maximum of 11 players

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