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Empirical formula is the simplest whole number ratio of atoms of each element in a compound. With the empirical formula and relative molecular mass, we can determine the actual molecular formula of a comp...

The Earth's atmospheric oxygen increased because plants and algae developed and used carbon dioxide for photosynthesis. This led to a decrease in atmospheric carbon dioxide levels. The origins of the ocea...

Magnesium oxide has a giant 3D lattice structure formed by strong electrostatic forces of attraction between the positively charged magnesium ions and the negatively charged oxygen ions. These ionic bonds...

NO2 is a strongly electron withdrawing group, making the ring more electrophilic (pi withdrawing).NMe2 is a strongly electron donating group, making the ring more nucleophilic (pi donating).These changes ...

Benzene is a circular molecule composed of 6 carbon atoms, each forming a single bond to two other carbons and one hydrogen. The fourth electron in the valence shell of each carbon is placed in a p orbita...