Top answers

Chemistry
All levels

Explain, in terms of its structure and bonding, why magnesium oxide has a very high melting point (4).

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...

LH
Answered by Luke H. Chemistry tutor
21821 Views

Describe the changes in the electronic properties of an phenyl ring when attached to an NO2 group or a NMe2 group when compared to a benzene ring.

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 ...

SP
4207 Views

Describe the structure of benzene with reference to delocalisation and an analysis of the Kekule structure.

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...

SP
4091 Views

Explain, in terms of its structure, why graphite is able to be used as a lubricant

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...

CJ
Answered by Charles J. Chemistry tutor
5157 Views

Explain the factors that increase the rate of a reaction.

For molecules to react with each other, they need to react frequently with the correct speed, enough energy and in the correct direction. An increase in temperature increases the kinetic energy of molecul...

FC
Answered by Fiona C. Chemistry tutor
2076 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences