A solution containing 1.20 g of impure sodium hydroxide solution per Liter. In a titration, it requires 18.5 L of 0.500 mol/ L of sulfuric acid to neutralize 20.0 L of the impure alkaline solution completely. The chemical reaction is shown below. 2NaOH + H2SO4 Na2SO4 + 2H2O

Determine the concentration of NaOH in mol/L

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box