There are four major methods of purification in the chemistry laboratory. which of the given techniques is not one of the four most common methods for separation and purification? distillation recrystallization extraction chromatography sublimation

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

What is i fracture in the crust called when land move up, down or sideways

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g