Electron-withdrawing groups in a compound enhance the acidity of the compound due to; a) Stability of the negative charge of the conjugate base. B) Distance from the COOH group. C) Strength of the electron-withdrawing group, d) All of the above.

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Adilute aqueous potassium nitrate solution is

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *