guys this question is freaking me out ( it is from igcse study guide for chemistry ,
about stoichiometry pg31
sample q 5
calcaluate the volume of sodium hydroxide , concentration of 0.16 mol/dm3 , needed to neutralise 20 cm3
of sulphric acid , concentration 0.2 mol/dm3 .
the eqation is 2NaOH+H2SO4--->Na2SO4+H20
-------------------------------------------------------
the answer is moles of H2SO4 = 20 divided by 10000 * 0.2 = 0.004
??
know why divided by 10000