Recent content by selina

ok thanks for you help, i understand where I've gone wrong. I should have divided 3.15g and not multiplied.

Hi, I have to make up a 0.5N solution of HNO3 (69%). I have attempted to do the calculation but am not confident if it is correct. Please see below: no. moles = cv/1000 c = 0.5N v = 100ml so no.moles = 0.5 x 100/ 1000 = 0.05 moles mass = 0.05moles/63 = 3.15g HN03 (69%) =...