i have problem while solving question number b iii)
your help will be much appreciated
bi) 20/1000 x 0.0200 mol/dm^3 = 4x10^-4
bii) 5 x (bi) = 2 x 10^-3
biii) 250/25 x 2x10^-3 = 0.02 mol
biv) 3.40g / 0.02 mol = 170 g/mol
bv) 151.8 + 18x = 170 , thus x = 1
CMIIW.