Top answers

Chemistry
All levels

Why does Sodium Chloride have high melting point?

Sodium Chloride has a high melting point, as it has a giant ionic lattice hence has strong electrostatic forces of attraction between oppositely charged ions, which requires lots of energy to overcome the...

Answered by Vithullan S. Chemistry tutor
2332 Views

An unknown gas from a reaction is contained in a 2 litre beaker, at standard atmospheric pressure and a Temperature of 25 Celsius. Calculate the number of moles of the gas.

PV=nRT n=PV/RT=(1.01*1050.002)/(8.31298)=0.0816 moles

Answered by James M. Chemistry tutor
1373 Views

Define an isotope.

Compounds with the same molecular formula but have different structural formulas.

Answered by Shivani S. Chemistry tutor
1909 Views

Can you describe four variables which affect the rate of a chemical reaction and how they affect the rate?

  1. Temperature: A higher temperature increases the rate of a reaction by increasing the number of particles with enough energy to take part in a reaction.
    2) Particle size: The smaller the particl...
Answered by Steven S. Chemistry tutor
1685 Views

In the presence of ultraviolet radiation, cyclohexane reacts with bromine. A mixture of cyclic products are formed, including C6H11Br. Discuss each step of this reaction providing equations to show the mechanism.

INITIATION: Br2 --> 2Br . The breaking of the Br2 bond from ultraviolet radiation forms two radicals, as one electron from the bond p...

Answered by Lisa K. Chemistry tutor
15202 Views

We're here to help

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