Over a million students use our free study notes to help them with their homework
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...
In graphite, the cations are arranged in layers (sheets of carbon atoms)The layers are able to slide over each other without interrupting the bonding within the layersHence, graphite can act as a lubrican...
←
94
95
96
97
98
→
Internet Safety
Payment Security
Cyber
Essentials
