This gave us aqueous solutions of both the organic and inorganic compounds. ... By adding 3M HCl to our solution, the hydrogen ions would protonate the nitrogen group of m-nitroaniline, forming a salt compound which would dissolve into the aqueous layer. ... In order to reverse this change, we added NaOH into the aqueous solution until the solution became basic (tested by using litmus paper). ... Next, we had to transfer m-nitroaniline from an aqueous solution to an organic one for better isolation. ... The aqueous solution was mixed with ethyl acetate so that the m-nitroaniline was extracte...

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Important Facts the smallest unit of life is the cell instructions for development are contained in DNA collectively, all of the chemical processes in a cell are called metabolism producers often obtain energy from the sun homeostasis refers to the ability to maintain a constant internal environment cells in domains archaea and eubacteria lack nucleii plants are multicellular producers an educated guess might be called a hypothesis science is based on evidence philosophy is not a step in the scientific method an atom is the smallest unit of substance that retains the properties of the subst...

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Introduction Shock absorbers ensure good road-holding and a comfortable ride by slowing the movement of the springs. A good shock absorber is one that is hard enough to prevent the wheel from leaving the ground and supple enough to ensure that the bodywork is not subjected to the force of the variou...

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• Grade Level: High School